Control systems Safety valves
4
Materials (continued)
27 29
28
24
25
20
21
19
20 22 23
4.7 17
No.
Part
Material
19
Stem
304 St. St.
20
Spring Washer
Carbon Steel
up to 232ºC / 450°F Carbon Steel 233 to 400ºC / 451 to 752°F High Temperature Alloy Steel
21
Spring
22
Bonnet
SA 216 Gr. WCB
23
Hex Nut (Body)
SA 194 Gr. 2H
24 25 27 28 29
Spring Adjusting Screw
304 St. St.
Adjusting Screw Locknut
304 St. St.
Stem Test Nut
Carbon Steel
Cotter Pin
Carbon Steel
Cap
Cast Iron
Materials continued on next page
**Other materials under request**
TI-P710-01 CTLS Issue 1
Page 3 of 13
SV44H Carbon Steel Safety Valve
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