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Chap 06_Butterfly Valve

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Chap 06_Butterfly Valve Powered By Docstoc
					                                                                                                    butterfly valve                  243




BUTTERFLY VALVE
The name comes from the wing-like structure and action of the         as they do not have the temperature restrictions imposed by
valve disk which is arranged in the pipe diameter principle. The      resilient seatings.
circular shaped disk turns about a diametrical axis within the
cylindrical bore of the valve body and a quarter turn rotation of           An extensive range of synthetic elastomer and plastic ma-
the disk opens or closes the valve.                                   terials for use as resilient seatings has been developed as a
                                                                      result of close co-operation between valve designers and spe-
      The basic simplicity of the design provides a compact and       cialists in the metallurgical, rubber, and plastics industries. Posi-
relatively low weight valve having few component parts. The           tive shut-off with repeatability of performance is assured and the
quarter turn action offers quick opening or closing with ease of      wide choice of seating materials provides the butterfly valve with
operation and the valve has good flow control characteristics.         an expansive range of service applications.

      In the wide open position the only obstruction to flow in that        If the valve is required for flow control purposes it is es-
due to the thickness of the disk, so the pressure drop across the     sential that there should be correct selection of size and type to
valve is small. During the closing movement the rate of cut-off of    give satisfactory and effective operation.
the flow diminishes as the disk moves towards the closed posi-
tion, making the valve well suited for flow regulation purposes.             The design concept of the butterfly valve is particularly well
                                                                      suited to large size manufacture. Sizes up to 10 metres diam-
     Butterfly valves are usually either resilient or metal to metal   eter have been produced and even larger sizes are presently
seated. Resilient seated valves may have the resilient seating        being considered for tidal and ocean thermal energy conversion
arranged in the body or attached to the periphery of the disk.        schemes. In general industrial applications butterfly valves have
                                                                      found wide acceptance in the oil, gas, chemical, water treatment
      Metal seated valves will normally provide longer life than      and process industries and are used in the condenser and circu-
resilient seated designs but are more difficult to make complete-      lating water systems of thermal power stations.
ly leak-tight. They are better suited for higher temperature duties
244   butterfly valve


Type of Butterfly Valve




       Butterfly valve, double flanged.       Butterfly valve, wafer/single flange, with rubber
       Fitted with gear operating unit      lined body. Fitted with gear operating unit




        Butterfly valve, wafer/ flangeless,       Butterfly valve, wafer/ U-section rubber
        with replaceable body seat              seated, with gear operating unit
                                                                                             butterfly valve                245



Type of Butterfly Valve


Serie S57                                   Serie S46                                    Serie S64




Wafer Type                                  Double Flange                                Lug Type
Suitable for mounting between flanges        Suitable for mounting between flanges         Suitable for mounting between flanges
PN10, PN16, ANSI class 150#                 PN10, PN16, ANSI class 150#                  PN10, PN16, ANSI class 150#

Sizes: DN40 - DN1000                        Sizes: DN50 - DN1000                         Sizes: DN40 - DN1000
Face to Face: EN 558-1, Row 20              Face to Face: EN 558-1, Row 13               Face to Face: EN 558-1, Row 20
Design: EN 593, including all referred      Design: 593, including all standards         Design: 593, including all standards
standards therein




                Serie S60                                              Serie S61




                Mono Flange                                            Mono Flange Long
                Suitable for mounting between flanges                   Suitable for mounting between flanges
                PN10, PN16, ANSI class 150#                            PN10, PN16, ANSI class 150#

                Sizes: DN50 - DN600                                    Sizes: DN50 - DN600
                Face to Face: EN 558-1, Row 20                         Face to Face: EN 558-1, Row 16
                Design: EN 593, including all standards                Design: 593, including all standards
246   butterfly valve


Type of Butterfly Valve


                            1   Topflange
                                According ISO 5211, suitable for direct mounting:
                                • Hand levers
                                • Gearboxes
                                • Pneumatic Actuators
                                • Electric Actuators
                                • Hydraulic Actuators


                            2   Valvebody
                                Standard material Nodular cast iron W 0.7040
                                also available in other materials.


                            3   Disc
                                Streamlined centric disc to reduce pressure loss
                                and lower energy costs available in several
                                materials.


                            4   Liner
                                Vulcanised to the body, no corrosion
                                between valve body and liner for:
                                • Longer life time
                                • Suitable for dry conditions
                                • For end of line service
                                • Low torque
                                • No flange gaskets required
                                   Available in several materials


                            5   Shaft
                                One shaft design with square shaft end


                            6   Support bearing
                                Extra support bearing for lower valve torque


                            7   Bearing bush
                                Bronze bearing bush vulcanised to the liner


                            8   Pin
                                Cylindrical pin


                            9   Stop plug
                                To seal bottom side of the valve and to guide
                        9       stem/shaft
                                                                                                butterfly valve   247



Butterfly Valve Technical Information                              Specifications



ALFA Hi-Flow butterfly valves with bonded liner and one shaft design have large advantages over other
conventional valves types and can be used 100% bi-directional bubble tight shut off.
Our valves are applicable for following industries:

        Shipbuilding (marine service)
        Off shore
        Water Industry
        Petrochemical Industry
        Civil engineering


                                                                  Liners
Body

Cast Iron                      EN 1561 EN-GJL-250                 NBR (Buna-N)
Ductile Iron                   EN 1563 EN-GJS-400-15              EPDM
Cast Steel                     ASTM A216 WCB                      FPM (Viton)
Stainless Steel (316L)         ASTM A743                          Other liner materials on request
Aluminium Bronze               BS1400 AB2
Aluminium                      EN 1706 EN AC-Al Si 12

Other materials on request



Disc                                                              Pins

Ductile Iron, Rilsan coated    EN 1563 EN-GJS-400-15              Stainless Steel            1.4122
Aluminium Bronze               BS1400 AB2                         Monel (K500)               BS3076
Stainless Steel (316)          ASTM A743                          Stainless Steel (316L)     1.4404
Duplex                         ASTM A276                          Aluminium Bronze           ASTM B150
Monel (K400)                   ASTM A494 M35

Other materials on request



Shaft



Stainless Steel                1.4122
Stainless Steel (420)          1.4021
Monel (K500)                   BS3076 NA18
Aluminium Bronze ASTM          B150

Other materials on request


TESTING
All our valves can be tested in accordance to API-598 or BS 5155 with test pressures as
indicated on the valve, all other valves are pressure and functional tested according Alfa Valves
quality standard which is within international quality standards.

QA AND TYPE APPROVALS
Alfa Hi-Flow butterfly valves are designed and produced according DIN ISO 9000-2000        specifications
and Module H of the European Pressure Legislation (PED)
248   butterfly valve


Butterfly Valve Materials Min./Max. Temperatures
                             butterfly valve   249



Butterfly Valve Seat-Liner
250   butterfly valve


Butterfly Valve Materials Selection
                                 butterfly valve   251



Butterfly Valve Torque Figures
252   butterfly valve



                        Wafer Type Butterfly Valve
Flange Connection: PN10, PN16, ANSI 150
                                                    butterfly valve   253




                       Wafer Type Butterfly Valve
Flange Connection: PN10, PN16, ANSI 150
254    butterfly valve



                          Wafer Type Butterfly Valve
Flange Connection: PN16
(Available in PN10, ANSI 150)
                                              butterfly valve   255




                 Wafer Flange Type Butterfly Valve
Flange Connection: PN10, PN16
(Available in ANSI 150)
256   butterfly valve



                Double Flange Type Butterfly Valve
Flange Connection: PN10, PN16
(Available in ANSI 150)
                                              butterfly valve   257




                Double Flange Type Butterfly Valve
Flange Connection: PN10, PN16
(Available in ANSI 150)
258    butterfly valve



                   Double Flange Type Butterfly Valve
Flange Connection: PN16
(Available in PN10, ANSI 150)
                                                 butterfly valve   259




                   Double Flange Type Butterfly Valve
Flange Connection: PN16
(Available in PN10, ANSI 150)
260    butterfly valve



                   Double Flange Type Butterfly Valve
Flange Connection: PN16
(Available in PN10, ANSI 150)
                                                   butterfly valve   261




                        Lug Type Butterfly Valve
Flange Connection: PN10, PN16
(Available in ANSI 150)
262    butterfly valve



                            Lug Type Butterfly Valve
Flange Connection: PN16
(Available in PN10, ANSI 150)
                                                       butterfly valve   263




                            Lug Type Butterfly Valve
Flange Connection: PN16
(Available in PN10, ANSI 150)
264    butterfly valve



                            Lug Type Butterfly Valve
Flange Connection: PN16
(Available in PN10, ANSI 150)
                                                       butterfly valve   265




                            Lug Type Butterfly Valve
Flange Connection: PN16
(Available in PN10, ANSI 150)
266   butterfly valve



                  Mono Flange Type Butterfly Valve
Flange Connection: PN10, PN16
(Available in ANSI 150)
                                                butterfly valve   267




                    Mono Flange Type Butterfly Valve
Flange Connection: PN16
(Available in PN10, ANSI 150)
268    butterfly valve



                    Mono Flange Type Butterfly Valve
Flange Connection: PN16
(Available in PN10, ANSI 150)
                                              butterfly valve   269




                  Mono Flange Type Butterfly Valve
Flange Connection: PN10, PN16
(Available in ANSI 150)
270    butterfly valve



                    Mono Flange Type Butterfly Valve
Flange Connection: PN16
(Available in PN10, ANSI 150)
                                                butterfly valve   271




                    Mono Flange Type Butterfly Valve
Flange Connection: PN16
(Available in PN10, ANSI 150)
272   butterfly valve



                        Handlever Series ‘2”/SL
Handlever Series ‘2”




Handlever Series ‘SL”
                                    butterfly valve                            273




Gearbox Series ‘Q”




                                   Parts / Materials list
                  Description             Material        Specs / Standard
                    Fasteners         Stainless steel
                     Grease        Complex EP-O grease
                     O-rings               Nitrile         NBR-70º shore
                     Gasket          Nitrile / Silicone NBR-70º shore / Silicone
              Axial needle bearing
                      Shaft           Stainless steel         AISI 303
                      Worm            Carbon Steel              C45-K
                    Quadrant           Ductile Iron      GGG40 / ASTM A356
                 Pos. Indicator          Cast Iron        GG25 / ASTM A48
                   Coverplate            Cast Iron        GG25 / ASTM A48
                      Body               Cast Iron        GG25 / ASTM A48




                                   Parts / Materials list
                  Description             Material        Specs / Standard
                    Fasteners         Stainless steel
                     Grease        Complex EP-O grease
                     O-rings               Nitrile         NBR-70º shore
                     Gasket          Nitrile / Silicone NBR-70º shore / Silicone
              Axial needle bearing
                      Shaft           Stainless steel         AISI 303
                      Worm            Carbon Steel              C45-K
                    Quadrant           Ductile Iron      GGG40 / ASTM A356
                 Pos. Indicator          Cast Iron        GG25 / ASTM A48
                   Coverplate            Cast Iron        GG25 / ASTM A48
                      Body               Cast Iron        GG25 / ASTM A48
274     butterfly valve



      AV-H, M and F Series High-Perfomance Butterfly Valves



                                           Schema of High-performance type

                                           This product is of heavy load designed for high pressure flow
                                           application. It is widely adopted for cargo valves of product
                                           and chemical tankers, steam and air conditioning in build-
                                           ings, chemical and petro-chemical plants, nuclear power
                                           plants and high pressure piping system in general.


                                           Operations

                                           The following operation of the valves are possible, the choice
                                           is depending upon the valve location and the type of work
                                           and service for which the valve is used,.

                                           .
                                           .   Manual handle lever Operation

                                           .
                                           .
                                               Manual worm gear Operation
                                               Single or double acting pneumatic Operation

                                           .   Hydro Operation
                                               Electromotor Operation




              P.NO.   PART NAME        MATERIAL
              1       BODY             CAST IRON, DUCTILE IRON, CAST STEEL,
                                       STAINLESS STEEL, AL-BRONZE
              2       DISC             CAST STEEL, STAINLESS STEEL,
                                       AL-BRONZE
              3       SEAT             SS. STEEL, TEFLON, RUBBER
              4       STEM             SS. STEEL (304, 316, 316L, 630, 17-4PH, Monel)
              5       DISC PIN         STAINLESS STEEL
              6       RETAINER         STAINLESS STEEL, AL-BRONZE
              7       RETAINER BOLT    STAINLESS STEEL
              8       THRUST PLATE     BRONZE, STAINLESS STEEL
              9       BOTTOM COVER     MILD STEEL, STAINLESS STEEL, AL-BRONZE
              10      BOTTOM BOLT      STAINLESS STEEL
              11      BOTTOM GASKET    TEFLON, GRAPHITE
              12      PACKING GLAND    SS. STEEL, MILD STEEL, BRONZE
              13      GLAND RING       BRASS, STAINLESS STEEL
              14      PACKING          TEFLON, GRAPHITE
              15      ACTUATOR STAND   MILD STEEL
              16      STEM BEARING     METALOPLAST
              17      STEM BEARING     METALOPLAST
              18      BOLT & NUT       STAINLESS STEEL
              19      SET BOLT         STAINLESS STEEL
                                       butterfly valve   275




AV-H, M and F Series High-Perfomance Butterfly Valves




Valve Dimensions
276     butterfly valve



      AV-H, M and F Series High-Perfomance Butterfly Valves




      Flange Dimensions
                                     butterfly valve   277




AV-H, M and F Series High-Perfomance Semi-Lug Type




Valve Dimensions
278    butterfly valve



      AV-H, M and F Series High-Perfomance Semi-Lug Type




  Flange Dimensions
                                      butterfly valve   279




   AV-H, M and F Series High-Perfomance Lug Type




Valve Dimensions
280     butterfly valve



         AV-H, M and F Series High-Perfomance Lug Type




      Flange Dimensions
                                      butterfly valve   281




 AV-H, M and F Series High-Perfomance Flanged Type




Valve Dimensions
282    butterfly valve



      AV-H, M and F Series High-Perfomance Flanged Type




  Flange Dimensions
                                   butterfly valve   283




AV-O Series Double Eccentric Butterfly Valves
284     butterfly valve



AV-OSR (Cargo Semi-Lug) Double Eccentric Butterfly Valve




      Valve Dimensions
                                         butterfly valve   285




AV-OSR (Cargo Semi-Lug) Double Eccentric Butterfly Valve




 Flange Dimensions
286     butterfly valve



      AV-OLR (Cargo Lug) Double Eccentric Butterfly Valve




      Valve Dimensions
                                       butterfly valve   287




 AV-OLR (Cargo Lug) Double Eccentric Butterfly Valve




Flange Dimensions
288     butterfly valve



  AV-OFR (Cargo Flange) Double Eccentric Butterfly Valve




      Valve Dimensions
                                        butterfly valve   289




AV-OFR (Cargo Flange) Double Eccentric Butterfly Valve




Flange Dimensions
290   butterfly valve


Butterfly Valve   Torque Required to Operate Valves
                                                            butterfly valve                 291




AV-L Series Cryogenic Eccentric Butterfly Valve


                  Schema of Cryogenic (LNG, LPG) Butterfly Valve

                  ACE cryogenic valves are widely used throughout the world, from liquefac-
                  tion plants, to liquefied gas carries, receiving tanks terminals as well as peak
                  shaving plants, in a critical and hazardous service conditions down to the tem-
                  perature as low as -196C.

                       The materials used throughout are of austenite staninless steel which
                  maintains its strength at low temperature and the sealing system is a soft
                  sealing, fire safe type incorporating Kel-F ring inserts into disc which ensures
                  trouble-free operation.

                      The valves are of extended bonnet design to create an insulation gas
                  column between the plastic stem packing and the cold fluid.

                       This prevents hardening and shrinking the packing and allows the exter-
                  nal operating section of the valve remain “worm”

                       The valve of butt-welding end has side entry maintenance system to
                  make the replacement of sealing ring without removing the valves from the
                  pipes.

                       All valves are tested at cryogenic temperature with “Manifold System” which
                  can examine the performance as critical as in an actual service condition.
292   butterfly valve



        AV-LNF (LNG) Double Flanged Butterfly Valves
                                 butterfly valve   293




AV-LNB (LNG) Buttwelding Butterfly Valves
294   butterfly valve



            AV-LPW (LPG) Semi-Lug Butterfly Valves
                                   butterfly valve   295




AV-LPF (LPG) Double Flanged Butterfly Valves
296    butterfly valve



                                   Series TC Butterfly Valves




      One-Piece shaft anti-blowout proof design, provide positive maximum strength.

      Mounting pad designed per ISO 5211, easily installations of hand levers, gear box, pneumatic or electric actuators.

      Low emission packing advanced braded (top and bottom) plus 3-4 deformed graphite packing rings ensure less
      20ppm on lugitive emission

      Disc seat design allows held replaceable without special tools.

      Laminated Seal PTFE or Graphite plusmetal layers, provide an elastic tight seal. Also fine-safe is assured.

      Stellited seat (optional) Integral hardfaced, provide longer valve life and less maintenance.

      Rigid body structure available in water, lug or double flange connection and various material range. Temperature
      range: -195C~550C.

      Long-length bearing fine-machined and handered (Nickel-plated) to reduce the stem function and ensure lower torque.
                            butterfly valve   297



Series TC Butterfly Valve
298   butterfly valve


Series TC Butterfly Valve
                                                   butterfly valve   299



Series TC Butterfly Valve Dimensions and Weights
300   butterfly valve


Series TC Butterfly Valve Dimensions and Weights
                                             butterfly valve   301



Series TC Butterfly Valve Engineering Data
Gear Operators
302    butterfly valve


Series TC Butterfly Valve Engineering Data
Valve Operating Torque (N.m)
                                             butterfly valve   303



Series TC Butterfly Valve Engineering Data
Flow Coefficient (Cv value)
304    butterfly valve


Series TC Butterfly Valve Engineering Data
Material Specifications

				
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