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									June 26, 2009


                              SUMMARY OF REQUIREMENTS


The following is a brief summary of the new and revised paragraphs in the Standard for Flow
Control Valves For Anhydrous Ammonia And LP-Gas, UL 125, which have a future Effective Date
of June 10, 2011 and the action that may be required to determine compliance.

Para/
                          New or Revised Wording                     Impact           Comment
Sections
                                                                              New title is more
                                                                              descriptive of the type of
                                                                              valves covered. New
                                                                     No       Edition was issued
Title      Flow Control Valves for Anhydrous Ammonia and LP-Gas
                                                                     Impact   because of major
                                                                              additions to address the
                                                                              many types of valves
                                                                              covered.
           These requirements cover the following types of
           anhydrous ammonia and liquefied petroleum gas (LP-
           Gas) valves that are used to control the flow of liquid
                                                                              Editorial to better reflect
           and/or vapor into and out of containers, or in piping     No
1.1                                                                           the application for these
           systems between containers, or between containers and     Impact
                                                                              valves
           utilization equipment, and are for use at temperatures
           within the range of minus 40°F (minus 40°C) to 130°F
           (55°C)
                     a) Shut-off Valves (primary or
                     secondary, and manual or automatic),
                     b) Excess Flow Valves,
                     c) Back Pressure Check Valves,
                     d) Filler Valves,                                        The standard has been
                     e) Vapor Return Valves, and                              expanded to document
                                                                     No
1.1 a-j              f)  Actuated Liquid Withdrawal Excess-                   historical requirements for
                                                                     Impact
                         Flow Valves;                                         LP-Gas and NH3 valves
                     g) Multiple function valves;                             used for flow control.
                     h) Internal valve;
                     i)  Emergency shutoff valve; and
                     j) Lever operated transfer valve.
           These requirements do not cover shut-off valves of the
           type commonly referred to as "cylinder valves" used on             This standard does not
           containers constructed under Department of                No       cover cylinder valves but
1.3
           Transportation (DOT) Specifications. Requirements for     Impact   references UL1769 for
           these valves are contained in the Standard for Cylinder            such requirements.
           Valves, UL 1769.
                                                                              This standard does not
                                                                              cover relief valves but
           These requirements do not cover safety relief valves.
                                                                              references UL132 for
           Requirements for these valves are contained in the        No
1.4                                                                           such requirements.
           Standard for Safety Relief Valves for Anhydrous           Impact
           Ammonia and LP Gas, UL 132.
Subject:   125                              Page 2 of 11                                     June 26, 2009


Para/
                              New or Revised Wording                                Impact           Comment
Sections
            These requirements do not cover automatic shutoff valves
                                                                                             Excludes electrically
            that use electricity to actuate the valve member.                       No
1.5                                                                                          operated valves. Those
            Requirements for these valves are contained in the                      Impact
                                                                                             valves covered by UL429.
            Standard for Electrically Operated Valves, UL 429.
1.8        Except for such observations as are required to ascertain                         Editorial – clarifies that
           performance characteristics, the assigning of pressure                   No       excess flow valves do
           and/or flow capacity ratings, other than for excess flow                 Impact   have a flow capacity
           valves, is not within the scope of these requirements.                            rating.
           A product that contains features, characteristics,
           components, materials, or systems new or different from
           those covered by the requirements in this standard, and
           that involves a risk of fire or of electric shock or injury to
           persons shall be evaluated using appropriate additional                           UL requirements are not
           component and end-product requirements to maintain the                            intended to address
           level of safety as originally anticipated by the intent of this          No       issues specific to the
1.9
           standard. A product whose features, characteristics,                     impact   certification of a product,
           components, materials, or systems conflict with specific                          therefore this paragraph
           requirements or provisions of this standard does not                              is being deleted.
           comply with this standard. Revision of requirements shall
           be proposed and adopted in conformance with the
           methods employed for development, revision, and
           implementation of this standard.
           The service pressure rating of a valve intended for use in
           anhydrous ammonia and/or LP-Gas service shall not be                              No change in intent.
                                                                                    No
2.1        less than 250 pounds per square inch (psi) (1.7 MPa) and                          Separating out LP-Gas
                                                                                    impact
           shall not exceed 1/5 of its rupture hydrostatic strength test                     from NH3 valves.
           pressure.
           The service pressure rating of a valve intended for use in
           LP-Gas service shall not exceed 1/5 of its hydrostatic
           strength test pressure and shall be in accordance with
           Table 2.1.
                                    (NEW) Table 2.1                                          Three pressure ratings
                        Service pressure rating of LP-Gas valves                             will now be allowed for
                                                                                             valves for LP-Gas as
                       Service                 Minimum pressure rating              No
2.2         LP-Gas vapor at operating                                                        indicated by new table
                                                                                    impact
            pressure of 125 psi (0.9 MPa)       125 psi (0.9 MPa) gauge                      2.1, but this will not
            gauge or less                                                                    impact currently Listed
            LP-Gas liquid, or vapor at                                                       valves.
            operating pressure over 125
                                                250 psi (1.7 MPa) gauge
            psi (0.9 MPa) gauge and at or
            below container pressure
            Higher than container            350 psi (2.4 MPa) gauge, or the
            pressure                           MAWP, whichever is higher

           Glossary. A new glossary section has been included in 8
                                                                               th            Definitions consistent
Section                                                                             No
           Edition to define the valves covered by the standard. (The                        with previous and current
4                                                                                   impact
                                                         th
           entire glossary has not been included. See 8 Edition)                             requirements.
                                                                                             Moved requirement to a
           An internal type valve, for which the mating flange is
                                                                                    No       new Section devoted to
5.3        provided as part of the container in which the valve is to
                                                                                    impact   internal valves – No
           be installed is not required to comply with 4.2.
                                                                                             change in requirements
           Two or more subassemblies intended to be assembled in
           the field as a unit shall be capable of being joined together            No       Clarified historical
5.7
           without requiring any of the subassemblies to be cut,                    impact   requirement.
           drilled, or welded.
Subject:   125                          Page 3 of 11                              June 26, 2009


Para/
                           New or Revised Wording                        Impact           Comment
Sections
           The construction of a valve shall be such that parts can be
                                                                         No       Clarified historical
5.8        reassembled after being dismantled to the extent provided
                                                                         impact   requirement.
           for routine maintenance.
Subject:   125                           Page 4 of 11                                June 26, 2009



           An operating or Liquid pressure-confining parts of a valve
           or operating parts shall have the strength and durability to
           provide reliable service of the parts and of the assembly,       Review   See Explanation for 6.2
6.1
           when failure of the part allows leakage or hazardous             Needed   below.
           operation.

           To determine compliance comply with 6.1, a material
           (except a valve disc or soft seat, a seal ring, a diaphragm,
           or a gasket) is to have a for pressure-confining parts of a
           valve for direct connection to a container or having a
           pressure rating of 250 psig or higher shall have a                        Materials for fluid
           minimum melting point (solidus temperature) of not less                   confining parts of valves
           than 950°F (510°C) 1500°F (816°C) and a tensile strength                  except for valves
           of no less than 10,000 psi (68.9 MPa) at 400°F (204°C).                   identified in exception 1,
                                                                                     having a lower melting
           Exception No. 1: Valves that are part of a meter assembly,                point than 1500 F are not
           lever operated transfer valves and LP-gas hose nozzle                     to be allowed as noted in
           valves shall have a melting point (solidus temperature) of       Review   NFPA 58. Exception 3
6.2
           not less than 950°F (510°C) and a tensile strength of not        Needed   allows handwheels,
           less than 10,000 psi (68.9 MPa) at 400°F (204°C).                         handles and levers on
                                                                                     valve sizes not greater
           Exception No. 2: A valve disc or soft seat, a seal ring, a                than ½ in pipe size to
           diaphragm, or a gasket is not required to comply with this                have materials with less
           requirement.                                                              than 950 F melting point

           Exception No. 3: A handle or lever on a shut off service
           valve having an inlet connection not greater than ½ in.
           NPT and not directly connected to a container is not
           required to comply with this requirement. See Section 38.

           To comply with 6.1, a material for pressure-confining parts
           of valves having a pressure rating of less
           than 250 psig and for other than direct connection to a
                                                                                     This requirement is not
           container, and operating parts of all valves shall                                            th
                                                                                     changed from the 7
           have a melting point (solidus temperature) of not less than
                                                                            No       Edition, which appeared
6.3        950°F (510°C) and a tensile strength of not
                                                                            impact   as 5.2, but now applies to
           less than 10,000 psi (68.9 MPa) at 400°F (204°C).
                                                                                     valves with a pressure
           Exception: A valve disc or soft seat, a seal ring, a
                                                                                     rating less than 250 psig.
           diaphragm, or a gasket is not required to comply with
           this requirement.

                                                                                     Changed “liquid” to “fluid”
                                                                            No
           A part in contact with the liquid fluid to be handled shall be            to cover both vapor and
6.4                                                                         impact
           resistant to the action of such liquid fluid.                             liquid phases of LP-Gas
                                                                                     and NH3
Subject:   125                           Page 5 of 11                              June 26, 2009



           A synthetic rubber part intended to be in contact with the
           liquids indicated in Table 5.1 shall not show
           excessive volume change or loss of weight, when
           evaluated on the basis of its intended function, following
           immersion for 70 hours in the specified test liquid. See the
           Volume Change Test, Section 23, and the
           Weight Loss Test, Section 24. With reference to 6.3
           elastomeric materials shall be subjected to the following
           tests:                                                                  No change of
           a) Accelerated Aging Test, Section 30;                                  requirements. Making
           b) Fluid Compatibility Test, Section 32; and                            reference to the
                                                                          No
6.7        c) Low Temperature Test, Section 33.                                    performance section of
                                                                          impact
           Polymeric materials shall be subjected to the Accelerated               the standard. Table 6.1
           Aging Test, Section 30 and the Fluid Compatibility Test,                is being moved to a new
           Section 32.                                                             performance section.
           Exception: Acetal polymers, chlorotrifluorethylene
           polymers, tetrafluorethylene, fluorinated ethylene
           propylene polymers and polyamides of composition
           polyhexamethylene adipamide or polycaproamide
           polymers (nylon 6, 6/6 or 6/16) shall only be subjected to
           the Accelerated Aging Test.
           Table 6.1 is deleted here and moved to New Section 32.

                                                                                   No Change of
                                                                                   requirements. Moving
           Paragraph is deleted here, but and moved to performance        No
6.8                                                                                requirements to the
           section. See New Section 32                                    impact
                                                                                   performance section of
                                                                                   the standard
                                                                                   Re-organized standard
                                                                                   and made reference to
                                                                          No
6.9        Paragraph deleted and moved to performance section.                     tests in performance
                                                                          impact
                                                                                   Section. No change in
                                                                                   requirements
           Two types of shut-off valve service are contemplated by                 No change in
           these requirements:                                                     requirements, however,
           a) Primary Service and                                                  the paragraph is being
           b) Secondary Service.                                                   deleted because it is an
                                                                          No
9.2        Primary service valves are those suitable for installation              installation requirement.
                                                                          impact
           where a positive shut-off is required. Secondary service                The seat leakage test
           valves are those suitable for installation only in branch or            describes requirements
           bypass piping where a positive shut-off is not essential.               for secondary service
                                                                                   valves.
           A shutoff valve shall not be equipped with a bypass or with
           a means to prevent it from closing completely.
           Exception: This requirement does not apply to a feature        No       Clarified historical
9.3
           provided to permit a take-off to re-circulate fluid or to      impact   requirement.
           supply a pilot or other individually controlled outlet.
Subject:   125                           Page 6 of 11                               June 26, 2009



           For shutoff valves and shutoff valve portion of filler valves
                                                                                    Shutoff valves with
           with handwheels, the handwheel and valve stem shall be
                                                                                    handwheels and stems
           so constructed so that it shall not fracture, break, crack or   Review
9.9                                                                                 shall be subjected to the
           have stem threads stripped, in the open and closed              Needed
                                                                                    stem torque Test, Section
           position when subjected to the Valve Stem Torque Test,
                                                                                    39
           Section 39.
                                                                                    Documents historical
           New Section 10 now describes requirements for automatic
                                                                                    requirements. Standard
Section    shutoff valves that use non-electrical energy to open and       No
                                th                                                  will now cover automatic
10         close valves. See 8 Edition of Standard for actual              impact
                                                                                    valves, other than
           wording.
                                                                                    electrically operated

           13.1 A filler valve shall incorporate one of the following:
           d) A positive shutoff valve with an internal excess flow        No       Documents historical
13.1d
           valve.                                                          impact   requirements


           New Section 16 now describes requirements for multiple                   Documents historical
Section                          th
           function valves. See 8 Edition of Standard for actual           No
                                                                                    requirements for multiple
16         wording.                                                        impact
                                                                                    function valves.

                                                                                    Documents historical
Section    New Section 17 now describes requirements for internal          No
                        th                                                          requirements for internal
17         valves. See 8 Edition of Standard for actual wording.           impact
                                                                                    valves.
                                                                                    Documents historical
           New Section 18 now describes requirements for
Section                                   th                               No       requirements for
           emergency shutoff valves. See 8 Edition of Standard for
18                                                                         impact   emergency shutoff
           actual wording.
                                                                                    valves.
                                                                                    Documents historical
           New Section 19 now describes requirements for multiple
Section                          th                                        No       requirements for lever
           function valves. See 8 Edition of Standard for actual
19                                                                         impact   operated and LP-Gas
           wording.
                                                                                    hose nozzle valves.

           Representative samples of each size and type of valve are
           to be subjected to the tests described in these
           requirements. When a series of shutoff or backpressure
           check valves are to be investigated in which the valves                  Documents historical
           differ in size only, and all sizes have the same pressure                requirements. Testing of
                                                                           No
20.1       rating, three representative samples are to be chosen to                 representative sizes is
                                                                           impact
           include the largest, smallest, and one intermediate size.                permitted by the
           Additional samples of parts constructed of nonmetallic                   standard.
           materials, such as seal materials and valve seat discs, are
           required for physical and chemical tests.

           A valve in the as-receivedcondition shall be free from
           leakage through stem or body seals or other joints, and
           shall not show evidence of porosity in castings when                     Revisions are editorial in
           tested as described in 22.2 at any aerostatic pressure                   nature – no change in
                                                                           No
22.1       between 0 and 1-1/2 times the rated service pressure of                  requirements. This
                                                                           impact
           the valve.                                                               change is consistent with
           a) 0 and 375 psi (0 and 2,588 kPa) or                                    new 2.2.
           b) 0 and 1-1/2 times the rated service pressure of the
           valve, whichever is greater.
Subject:   125                            Page 7 of 11                                  June 26, 2009




                 The seat of a shut-off valve intended for primary service,                Revisions to 24.2 are
                 when in the closed position, shall be free from leakage                   editorial in nature – no
                 at any aerostatic pressure between 0 and 1-1/2 times                      change in
                 the rated service pressure of the valve.                                  requirements, and are
                 a) 0 and 375 psi (0 and 2,588 kPa) or                                     consistent with new 2.2.
                                                                               No
24.2             b) 0 and 1-1/2 times the rated service pressure of the                    Exception to 24.2
                                                                               impact
                 valve, whichever is greater.                                              recognizes that internal
                 Exception: Internal valves shall be free from leakage at                  valves do not require
                 any aerostatic pressure between 0 and 1.0 times                           test to be done at 1-1/2
                 the rated service pressure of the valve.                                  times because of the
                                                                                           seat construction.
                 The seat of a shut-off valve intended for secondary
                 service, when in the closed position, shall not show a
                 rate of leakage of more than 2 cubic feet per hour (0.02                  Revisions are editorial
                 dm3/s) when subjected to any aerostatic pressure                          in nature – no change
                                                                               No
24.3             between 0 and 1-1/2 times the rated service pressure of                   in requirements. This
                                                                               impact
                 the valve.                                                                change is consistent
                 a) 0 and 375 psi (0 and 2,588 kPa) or                                     with new 2.2.
                 b) 0 and 1-1/2 times the rated service pressure of the
                 valve, whichever is greater.
                 A back pressure check valve provided with a resilient
                 seat, when in the closed position, shall not leak when
                                                                                           Revisions are editorial
                 subjected to any aerostatic pressure between 20 psi
                                                                                           in nature – no change
                 (138 kPa) and 1-1/2 times the rated service pressure of       No
24.4                                                                                       in requirements. This
                 the valve.                                                    impact
                                                                                           change is consistent
                 a) 20 and 375 psi (138 and 2,588 kPa) or
                                                                                           with new 2.2.
                 b) 20 psi (138 kPa) and 1-1/2 times the rated service
                 pressure of the valve, whichever is greater.
                                                                                           The change in
                 A back pressure check valve provided with a metal-to-
                                                                                           requirements is based
                 metal seat, when in the closed position, shall not leak at
                                                                               No          upon circumference of
24.5             a rate exceeding 1 cubic foot per minute (0.47 dm 3/s)
                                                                               impact      seat area. Essentially
                 0.6 cfm/inch seat circumference when subjected to an
                                                                                           no change in base
                 aerostatic pressure of 20 psi (138 kPa).
                                                                                           requirement.
                 Seat leakage tests for shutoff valves are conducted with
                 the inlet of the sample valve connected to a source of
                 aerostatic pressure, with the valve in the closed position,
                 and with the outlet open. For an internal valve, the
                 source of pressure is applied to the container portion of
                 the valve with the valve member in the closed position
                 and the inlet open. For a back pressure check valve, the                  Clarification in test
                 source of pressure is applied in the reverse flow             No          method based on type
24.8
                 direction. A positive shut-off valve and a pressure gauge     impact      of valve. No change in
                 having a pressure range of no less than 1-1/2 times, nor                  requirement.
                 more than 2 times, the test pressure are to be installed
                 in the pressure supply piping. The pressure gauge is to
                 be installed between the shut-off valve and the sample
                 under test. While under the applied test pressure,
                 observations for leakage are to be made with the open
                 outlet submerged in water unless otherwise indicated.
Subject:      125                            Page 8 of 11                                 June 26, 2009



                    A manual shut-off valve, and an automatically closing,
                    manual-reset valve, shall be capable of complying with
                    the applicable leakage test requirements of 22.1 and
                    24.2, or 22.1 and 24.3, after being subjected to 6,000
                    the number of cycles of opening and closing under the
                    test conditions described in 25.2 – 25.6. There shall be
                    no sticking of the valve, nor shall the valve become
                    inoperative. Required corrosion protection shall not be
                    impaired. All other valves that are opened and closed
                    using other than manual operation or having automatic
                    features shall perform as intended for at least 100,000
                    cycles of operation. The test shall be performed as
                    indicated in Table 25.1 for the various types of shutoff
                                                                                             Clarification in test
                    valves. There shall be no sticking of the valve, nor shall
25.1 with                                                                                    cycles and test method
                    the valve become inoperative. Required corrosion             No
Exceptions                                                                                   based on type of valve.
                    protection shall not be impaired. Rotating stem type         impact
1, 2, 3 and                                                                                  Documents historical
                    valves employing the stuffing box design discussed
                                                                                             requirements.
                    under 9.5 shall be permitted to be adjusted following the
                    endurance conditioning and during leakage testing.
                    Following any adjustment, the valve shall be capable of
                    being opened and closed by hand.
                    Exception: Rotating stem type valves employing the
                    stuffing box design discussed under 8.4 are not required
                    to be subjected to this test.
                    Exception No. 1: Internal valves shall be subjected to
                    6,000 cycles.
                    Exception No. 2: Emergency shutoff valves shall be
                    subjected to 6,000 cycles.
                    Exception No. 3: Excess flow and back pressure check
                    valves are not subjected to this test.
                           Number of cycles for shutoff valve types

                                                              Number of
                                  Valve type
                                                               cycles
                     Manual Valves, Internal Valves or
                     Emergency Shutoff Valves, with or                                       Clarification in test
                     without Actuators, and automatic            6,000                       cycles and test method
                     closing, manual reset valves                                No
Table 25.1                                                                                   based on type of valve.
                                                                                 impact
                                                                                             Documents historical
                     Lever Operated Fuel Transfer Valves                                     requirements.
                                                                30,000

                     LP-Gas Hose Nozzle Valves and All
                     Other Shutoff Valves With Actuators,       100,000
                     and Automatic Shutoff Valves
Subject:     125                             Page 9 of 11                                  June 26, 2009




                   A shut-off valve for use only with LP-Gas that has a                       Revisions now allow
                   pressure rating of 250 psi (1.7 MPa) gauge or higher, or                   valves to be rated at
                   one for use with either LP-Gas or anhydrous ammonia,                       125 psig. Changes to
                   is to be tested with the valve outlet plugged, the valve       No          this paragraph clarify
25.3               body filled with n-hexane, and the valve inlet subjected       impact      testing to the correct
                   to a pressure of 250 psi (1.7 MPa) gauge. If the shutoff                   pressure rating. This
                   valve for LP-Gas service has a rating of 125 psig, the                     change is consistent
                   test is conducted with n-hexane and the valve inlet                        with new 2.2.
                   subjected to a pressure of 125 psi (0.9 MPa) gauge.
                   An endurance test is to be conducted at a rate no faster
                   than 10 times per minute. For a shut-off valve, the
                   closing torque is to be consistent with the size of the        No          Clarifies historical
25.5
                   handwheel, wrench, or other means used to operate the          impact      requirement
                   valve. Shutoff valves with an adjustable packing nut are
                   allowed one adjustment during the endurance test.
                                                                                              Revisions now allow
                                                                                              valves to be rated at
                   A valve shall be capable of withstanding, without rupture
                                                                                              125 psig. Changes to
                   or permanent distortion, a hydrostatic pressure of 1250
                                                                                  No          this paragraph clarify
26.1               psi (8.6 MPa) or 5 times the rated service pressure of
                                                                                  impact      testing to the correct
                   the valve, whichever is greater. See 2.1 Service
                                                                                              pressure rating. This
                   Pressure Rating, Section 2
                                                                                              change is consistent
                                                                                              with new 2.2.
                   There were many minor changes to the Operation Test
                   method, which clarified historical methodologies, such
                   as, the flow rating is the average of all trials in all flow               Clarifies historical
                                                                                  No
Section 27         directions, small valves are permitted to have vapor                       requirements and
                                                                                  impact
                   rating only, clarification to instrumentation and flow test                methodologies.
                                                                           th
                   equipment and other minor changes. See New 8
                   edition, Section 27 for actual wording changes.
                   Volume Change Test Method is being deleted because             No          No change in
Section 29         the test method is covered by UL157, which is now              impact      requirements.
                   referenced in Section 32.
                                                                                              No change in
                   Accelerated aging test is now covered in this section,                     requirements. This
                                                                                  No
Section 30         under the performance section of the standard. It was                      section now documents
                                                th                                impact
                   taken from Section 5 of the 7 edition.                                     historical requirements
                                                                                              for polymeric parts
                   Weight Loss Test is being deleted because the test             No          No change in
Section 31         method is covered by UL157, which is now referenced            impact      requirements.
                   in Section 32.
                                                                                              No change in
                                                                         th                   requirements. This
                   New Section 32 was taken from Section 5 of the 7               No
Section 32                                                                                    section now documents
                   edition.                                                       impact
                                                                                              historical requirements
                                                                                              for polymeric parts
Subject:     125                            Page 10 of 11                                June 26, 2009



                   When the elastomeric part does not comply with the
                   requirements in 33.1, the following alternate test may be
                   conducted. One complete valve assembly is to be
                   placed in a cold chamber maintained at minus 40 2°F                     Changes to this test
                   (minus 40 1°C) for 24 hours, removed, manually                          method recognize that
                   operated for 25 cycles consisting of complete opening                    LP-Gas and NH3 have
                   and closing, and then returned to the cold chamber for 1     No          a much lower pressure
33.3
                   hour. (When the elastomeric part is a static seal, the 25-   Impact      at –40 F temperature.
                   cycle operation test is not conducted.) Immediately after                The test pressure is
                   the 1 hour exposure, the valve assembly is to be                         consistent with this
                   subjected to the External Leakage Test, Section 22, and                  temperature.
                   the Seat Leakage Test, Section 24, as appropriate,
                   using a test pressure of 30 psig. The leakage rate shall
                   comply with the requirements specified for these tests.
                                                                                            Documents historical
                   Documents Thermal Link Operation Test. See new               No
Section 35                                                                                  requirement and test
                   edition for specific wording.                                Impact
                                                                                            method.
                                                                                            Documents historical
                   Documents Fire Test. See new edition for specific            No
Section 36                                                                                  requirement and test
                   wording.                                                     Impact
                                                                                            method.
                                                                                            Documents historical
                   Documents Drop Test. See new edition for specific            No
Section 37                                                                                  requirement and test
                   wording.                                                     Impact
                                                                                            method.
                                                                                            Documents historical
                   Documents Impact Test. See new edition for specific          No
Section 38                                                                                  requirement and test
                   wording.                                                     Impact
                                                                                            method.
                   39.1 Six production samples shall be tested, three each
                   in the opened and closed position. Each sample shall
                   comply with 9.9. The torque in in-lbs that shall be
                   applied to each sample shall be in accordance with the
                   following equation:
                                                                                            New Torque Test for
                   T = 50 X D (handwheel diameter in inches)                    Review
Section 39                                                                                  shutoff valves with
                   39.2 A torque wrench shall be applied to each of 3           Needed
                                                                                            handwheels.
                   sample valve handwheel and torque be applied in the
                   closed position. A torque wrench shall be applied to
                   each of 3 sample valve handwheel and torque be
                   applied in the opened position.

                   41.1
                   c) The rated service pressure when the rating is not in
                                                                                            UL Listings have not
                   excess of 250 psi (1.7 MPa), and
                                                                                No          previously covered
41.1 c and e       d) The direction of flow, when not evident.
                                                                                Impact      valves covered by par.
                   e) Valves for secondary service, in accordance with 9.2
                                                                                            41.1 (c) or (e).
                   and 24.3 shall be so marked.
Subject:   125                            Page 11 of 11                                 June 26, 2009




                 Each excess flow valve shall be marked with its rated
                 closing flow capacity in gallons per minute (m 3/s) of
                 liquid anhydrous ammonia or LP-Gas (propane), or
                 both, when appropriate. An excess flow valve having
                 only a vapor rating in accordance with the exception to
                 27.2 shall have its flow capacity in cubic feet per hour or   No          Clarifies historical
41.2             liters per minute of gaseous anhydrous ammonia or LP-         Impact      requirements.
                 Gas (propane), or both, when appropriate marked on
                 the valve. When the rated closing flow used to
                 determine compliance with 27.1 is dependent upon
                 mounting position, the marking shall include reference to
                 the direction of flow mounting position.

                 All markings shall be legible and permanent, such as
                 afforded by metal stamping, by molding in a casting, or
                 by a metal nameplate, or printed on a pressure sensitive
                 label(s) secured by adhesive. To determine when a
                 pressure-sensitive label, or label secured by cement or
                 adhesive is of a permanent nature, representative             No          Clarifies historical
41.3
                 samples are to be subjected to exposure conditions for        Impact      requirements.
                 outdoor use (standard atmospheric, water immersion,
                 oven aging, low temperature, ultraviolet light, and water
                 exposure), in accordance with the Standard for Marking
                 and Labeling Systems, UL 969.

                 For a nonself-closing type valve, the appropriate
                 operating positions or the direction of movement shall        No          Clarifies historical
41.6
                 be clearly indicated for a manual operating lever or reset    Impact      requirements.
                 handle.

								
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