44
Control systems Safety valves
Materials
4
4
4
Sealed cap
6
Packed easing lever (DN20 to DN100 only)
3 9
7
10
4.7 42
8 2 5
1
No.
Part
Material
SV607/SV604
1
Body
SG iron/carbon steel
GJS-400-18LT/1.0619 + N
DN20 - DN100 1.4057 or for DN125 - DN150 ANC2
2
Seat
Stainless steel
3 4
Bonnet
SG iron/carbon steel
GJS-400-18LT/1.0619 + N
Cap
SG iron
GJS-400-15
Stainless steel, hardened 47-52 HRC (Hardened Rockwell 'C' Scale)
DN20 - DN100 1.4021 or for DN125 - DN150 CA15
5
Disc
Standard
Chrome-vanadium alloy steel
6
Spring
For temperatures above 230 ° C Tungsten alloy steel
7
Guide plate
SG iron
GJS-400-15
DN20 - DN100 1.4301 or for DN125 - DN150 1.4308
8
Skirt
Stainless steel
9
Stem
Stainless steel
1.4021
10
Body bolts
Steel
CK35
TI-S13-27 CMGT Issue 17
Page 4 of 13
SV60 Safety Valve
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