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					Cash Acme
A Division of Reliance Worldwide Corporation

Training Program Pressure Reducing Valves and Relief Valves

1

Mains Water Pressure
45 psig 75 psig

100 psig
200’

125 psig

150 psig 132 psig

2

How does a Regulator Work?

4

How does a Regulator Work?

5

How does a Regulator Work?

6

How does a Regulator Work?

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Valve Terminology
Pressure Initial Pressure Upstream Pressure Supply Pressure  P1
Inlet Outlet

Pressure Reduced Pressure Delivery Pressure Downstream Pressure  P2
8

Valve Terminology
 Pressure  Capacity  Flow

Differential (P1 P2)  P  Fall Off  Droop  P2 Variation

Rate  Demand

9

EB-86/EB86U Regulator

11

Back Check Piston Assembly

12

EB86U Capacity Chart

13

EB-87/EB87U Regulator

14

EB-75 Valve

15

Balanced Construction
Cash

Watts
N250B 35B 35BDU

Wilkins
60 70DU

– EB-75 – EB-86 – EB-600

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EB-24U Regulator

17

Yoke Type Construction
Cash

Watts
223U5B U5B

Wilkins
500 600

– E-3 – E-41 – EB-24

18

E-56 Regulator

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E-56 Features & Benefits
2”, 2 1/2” & 3”  Water, air  Threaded & flanged connections  Exceptionally simple design  Very high capacity  Max. inlet pressure 400 psig
 Size  25

to 125 psig set pressure range  Max. temperature 200o F  Competition - Watts 223, Wilkins 500LU

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Comparable
Cash

Watts
N223

Wilkins
500

– E-56

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EB25U

22

Model PSL-C ½”
Complete with Compression Fittings

PSL Pressureguard offers major advantages in many types of installations:

1. 2. 3. 4. 5. 6. 7. 8. 9. 10.

Suitable for inlet pressures up to 300 psi Operates at up to 180 Quiet operation Suitable for hard water Incorporates stainless steel seat for extended life Offers high flow rates Available in female, compression and hose connections Easy to install Has set outlet pressure of 50 psi Available in following sizes :

For controlling high water pressure. Applications include dishwashers, washing machines, water meters, water softeners, water fountains, RVs or any other use where space limitations are a factor. Ideal for limiting pressure in pressuresensitive pipelines, e.g. plastic, and for other applications requiring pressure control at 50 psi.

3/8 ” NPT 1/2 “ NPT 3/8 “ Compression 1/2 “ Compression 3/4 “ Hose Connection

23

Installation
position (horizontal is optimum)  Blow out the system  Introduce fluids slowly  Position for easy maintenance & repair  Use 2 valves when pressure reduction is greater than 4 to 1
 Any

24

Multiple & Parallel Installation
 When

to use parallel installation

– Situations of wide demand variations so reducing wear on large regulator – Better assurance of continuous water supply in critical installations – Less costly on original installation – Easier maintenance – When low flow is less than 10% of the valve capacity
25

Multiple & Parallel Installation

26

Multiple & Parallel Installation
 Selecting

the regulators

– Determine the flow rate – Select regulators totaling the flow rate required – Determine the regulator pressure settings
off  Set smaller one 10psi higher
 Fall

27

Troubleshooting
 Pressure

builds downstream

– – – –

Thermal expansion of water during heating Foreign matter in seat/disc area Cut, worn or scored disc Damaged seat

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Troubleshooting
 Fluctuating

pressure at downstream fixtures

– Low water pressure in street mains – Heavy periodic demand

30

Troubleshooting
 Inadequate

flow from fixtures

– – – – –

Pipelines to fixtures may be inadequate House main supply may be inadequate PRV may be adjusted too low PRV may be the wrong size Strainer could be fouled or clogged

31

Troubleshooting
 PRV

hums, whistles or chatters

– High velocity of flow – Worn or loosely assembled seat disc – Low demand verses large size PRV

32

Troubleshooting
 Leakage

through weep hole or adjusting

screw
– Ruptured or cut diaphragm – Diaphragm assembly loose

33

Overview
may be balanced or unbalanced  They absorb energy which gives creates fall-off (droop)  Flow is a function of pressure drop  Always size for the worst condition (highest flow at the lowest pressure drop)  Regulators usually fail in the open position
 Regulators

34

Hot Water Supply Systems
1

lb. Nitroglycerine = 2,000,000 ft. lbs. Explosive energy

1

lb. Water (flashed into steam) = 750,000 ft. lbs. Explosive energy

35

Hot Water Supply Systems
3/4” Pipe
148oF 157oF 172oF 130oF

4”
146oF 4” 170oF 4” 191oF Cold Water Inlet

4”

4”

Temperature distribution under no flow conditions

8 7 6 5

4
3 2 1

Ave. 210oF

36

NCLX-5 Temperature & Pressure Relief Valve

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Thermal Element

38

FV Series Commercial T & P Valves

39

Relief Valve Ratings
A.G.A., C.G.A., A.S.M.E. RATINGS
A.G.A./C.G.A. Rating (btu/hr.) Element Extension Length Series Drain Inlet

Type

A.S.M.E. Relief Rating At Pressure Setting Below (btu/hr.)

FVX-3C FVX-5C FVX-8C FVMX-3C FVMX-5C FVMX-8C FVX-3C FVX-5C FVMX-3C FVMX-5C FVX-5L FVX-8L FVMX-4L FVX-4 FVMX-3

4 4 4 4 4 4 4 4 4 4 15 15 15 -

3/4" f 3/4" f 3/4" f 3/4" m 3/4" m 3/4" m 1" f 1" f 1" m 1" m 1" f 1" f 1 1/4" m 1 1/2" f 2" m

3/4" f 3/4" f 3/4" f 3/4" f 3/4" f 3/4" f 1" f 1" f 1" f 1" f 1" f 1" f 1" f 1 1/2" f 1 1/2" f

2-7/8" 4-9/16" 7-3/4" 2-11/16" 4-3/8" 7-9/16" 3" 4-3/4" 3-1/16" 4-3/4" 4-13/16" 8-1/8" 3-31/32" 4-1/8" 3-1/4"

185,000 205,000 205,000 185,000 205,000 205,000 500,000 500,000 500,000 500,000 750,000 750,000 750,000 1,200,000 1,200,000

75 psig 1,034,000 1,034,000 1,034,000 1,034,000 1,034,000 1,034,000 1,165,000 1,165,000 1,165,000 1,165,000 1,670,000 1,670,000 1,670,000 3,273,000 3,273,000

100 psig 1,327,000 1,327,000 1,327,000 1,327,000 1,327,000 1,327,000 1,495,000 1,495,000 1,495,000 1,495,000 2,515,000 2,515,000 2,515,000 4,199,000 4,199,000

125 psig 1,619,000 1,619,000 1,619,000 1,619,000 1,619,000 1,619,000 1,825,000 1,825,000 1,825,000 1,825,000 3,070,000 3,070,000 3,070,000 5,125,000 5,125,000

150 psig 1,912,000 1,912,000 1,912,000 1,912,000 1,912,000 1,912,000 2,155,000 2,155,000 2,155,000 2,155,000 3,625,000 3,625,000 3,625,000 6,050,000 6,050,000

40

Pressure Relief Valve Seat Design
A

safety relief valve is a pressure relief valve actuated by inlet static pressure and characterized by rapid opening or pop action.

Seat Area

Primary Seat Area
Secondary Seat Area

41

FWL-2 Valve

42

F-82 Valve

43

F-95 Valve

44

BFP Valve

46

Boiler Feed Valves
A-40,

AB-40, A-41, A-42, A-89

47

Dual Control Valves


CQ-M

48

V-101 Valve

49

VAP Valve

50

BF Valves

51

Hose Bibb Backflow Preventers
 V-3

& VB-222

52

VR-801 Valve

53

A.S.S.E. Listed Valves
Standard
1012 1011 1003 1003 1001 1003 1011 1024 1024 1003 1003

Valve Type
BFP V-3 E-Series 3 EB-24 V-101 EB-87 VB-222 BF-1 BF-2 EB-600 EB-86

Size
1/2” & 3/4” 3/4” 1/2” thru 2” 1/2” thru 2 1/2” 1/2” thru 1” 1/2” thru 1” 3/4” 3/4” & 1” 1” x 3/4” 3/4” thru 2” 1/2” thru 2”

54

L.A. Listed Valves
File #
M-660355 M-660356 M-870152 M-750091 M-750091 M-850065 M-850065 M-850065

Valve Type
E EB-24 V-101 V-3 VB-222 EB-86 EB-87 EB-600

Size
1/2” thru 2” 1/2” thru 2 1/2” 1/2” thru 2” 3/4” 3/4” 1/2” thru 2” 1/2” thru 1” 1/2” thru 2”

55

C.S.A. Listed Valves
File #
67690 67690-1 67690-1 67690-1 67690-2 67690-3 67690-3 67690-4 67690-5 67690-6 67690-7 67690-8

Valve Type
BF-1 BF-2 V-3 V-101 EB-87 BF-1 BF-2 V-101 WM-1 & WM-2 BFP-C VB-222 V-101

Size
3/4” 1” 3/4” 3/4” & 1” 1/2” thru 1” 3/4” & 1” 1” 1/2” 1/2” 1/2” & 3/4” 3/4” 1 1/4” thru 2”

C.S.A.#
B64.6 B64.6 B64.2 B64.1.1 B356-M79 B64.6-M86 B64.6-M86 B64.1.1 B125-M85 B64.3-M88 B64.2.2-M88 B64.1.1

56

A.G.A. Listed Valves
Certificate #
22-01D 22-04C
22-07C 22-10B 22-11B 22-12A General

Description
3/4” FVX-Series 4 1/2” & 3/4” Type NC, FC, FWL-2. Sears & Wards 1” FVX-Series 4 1 1/2” & 2” FVX 1/2” & 3/4” VR-801 1” & 1 1/4” Type FVX-Series 15 1” FVMX-3LS (New valve added to cert. # 22-07C)

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C.G.A. Valve Listing
& 3/4” Type NC & FWL-2  3/4” Type FVX/FVMX-3C, 5C, 8C Ser. 4  1” Type FVX/FVMX-3C, 5C Ser. 4  1” & 1 1/4 Type FVX/FVMX Ser. 15  1/2” & 3/4” Type VR-801
 1/2”

58

Canadian Province Listing
Province
Alberta British Columbia Manitoba New Brunswick Newfoundland Nova Scotia Ontario Quebec Saskatchewan

CRN
0G0053.62 0G0053.61 0G0053.64 0G0053.67 0G0053.60 0G0053.658 0G0053.65 0G0053.6 0G0053.653

59

I.A.P.M.O. Listed Valves
File #
2844 504 504 504 504 504 1510 1510

Valve Type
V-101 E-3 EB-87U EB-600 EB-86 EB-24 VB-222 V-3

Size
1/2” thru 2” 1/2” thru 2” 1/2” thru 1” 1/2” thru 2” 1/2” thru 2” 1/2” thru 2 1/2” 3/4’ 3/4”

60

A.S.M.E. Listed Valves
2” F-82 1 1/2” & 2” FV(M)X 1/2” & 3/4” FS-15 1 1/4” F-82 3/4” NCLX (150#) 3/4” NCLX (125#) 1” FVX Ser. 4 1 1/2” F-82 3/4” FVX Ser. 4 3/4” F-30 3/4” FWL-2 (150#) 3/4” FWL-2 (125#) 3/4” FCLX 3/4” F-82 1” & 1 1/4 FVX Ser. 15 3/4” & 1” F-95 1” F-82
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