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Relief Valves

2" and 3" Relief Valves

Relief Valve diagram

Relief Valve table


Dimension/
Size
#2-1000
#2-2750
#2-5000
#3-4000
#3-5000
#3-7500
 
Valve
Size
C(V)
 
Shear Pin
Number
Pin Diameter
(IN) +/- .002
A
11
15 3/8
2"-1000
92
# 6
.1130
B
4 3/4
6 7/8
2"-2750
52
#10
.1483
C
3 3/8
4 5/8
2"-5000
23
#30
.2070
Threads
2" API LP
3" API LP
3"-2000
130
#40
.2253
Weights
25 lbs.
35 lbs.
3"-4000
66
#50
.2437
     
3"-5000
56
#55
.2500
         
#60
.2625

Valve Pressure Settings

Valve Size
Shear Pin Number (One Only)
Settings (PSI)
2"-1000
#6
400, 600, 800, 1000
2"-2750
#10
1250, 1750, 2250, 2750
2"-5000
#10
2300, 3200, 4100, 5000
3"-4000
#30
#40
#50
#60
2400
3100
3600
4000
3"-5000
#30
#40
#50
#55
#60
2800
3200
4100
4500
5000
3"-7500
#30
#40
#50
#55
#60
4000
5500
6500
7000
7500
2" Relief Valve drawing
 
3" Relief Valve drawing

2" Relief Valve

 

3" Relief Valve

Ref. No.
Material and Description
Ref. No.
Material and Description
1
Cover - Aluminum
1
Cover - Ten Z Alloy
2
Latch Spring with Screws and Nuts
2
Latch Spring with Screws and Nuts
3
Shear Bar - SST17-4PH
3
Shear Bar - 17-4PH-SST
4
Body
4
Body
5
Cushion - Buna-N
5
Cushion - Buna-N
6
Stem - SST-17-4PH
6
Stem - 17-4PH SST
7
Seal - Buna-N
7
Seal - Buna-N
8
Washer - SST-18-8
8
Washer - SST-18-8
9
Cotter Pin - SST
9
Cotter Pin
10
Sub - Steel-C1213
10
Sub - C1213 Steel
Sub - SST-303 Sub - 303-SST
11
Pin, Shear Bar - Steel-4140
11
Pin, Shearing Bar - Steel-4140
12
Cover Spring - Spring Steel
12
Pin, Cover - Steel-4140
13
Pin, Cover - Steel-4140
13
Gasket - Copper
14
Gasket - Copper
14
Bushing - Bronze
15
Bushing - Bronze
15
Spring Pin
16
Shear Pin Kit - Controlled Steel Wire
16
Shear Pin Kit - Controlled Steel Wire
   
17
Sheer Pin (pack of 10 only)