44
Control systems Safety valves
Materials
No.
Description
Material
1 2 3 4 5 6 7
1 2 3 4 5 6 7 8
Cap
Bronze
ASTM B 16
Adjusting screw
Bronze
ASTM B 16
12
Locking nut
Bronze
ASTM B 16
Bonnet
Bronze
ASTM B 61/62
Spring washer
Bronze
ASTM B 16
Stem
Bronze
ASTM B 16
8
Spring
Stainless steel
ASTM A 313 T 631
Nameplate
Stainless steel
9
Spring washer bracket Bronze
ASTM B 283
6
10
Disc
Bronze
ASTM B 16
9
11
Body
Bronze
ASTM B 16
10
12
Cap gasket
Teflon
11
4.7 78
Dimensions/weights (approximate) in mm and kg
NPTM x NPTF threaded connections Connections Orifice
Dimensions
Weight
Entry
Output
A
B
C
½"
¾"
A2
149
54
35
0,7
¾"
1"
B2
152
60
35
0,9
1"
1"
C1
191
67
48
1,4
1½"
1½"
E1
248
89 63,5
2,9
A
2"
2"
F1
283 102
67
4,2
2½"
2½"
G1
305 121 79,5
9,5
B
C
TI-P276-04 CTLS Issue 1
Page 2 of 3
SV568L Relief Valve
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