44
Control systems Control valves
Materials
14
7
11 8
12
6
13
2
10 9
1
4
5
3
4.1 176
No. Part
Material
Connection
1 2 3 4 5 6 7 8 9
Body
Carbon steel
Screwed (BSP/NPT/SW/BW)
A105N/1.0460
Bonnet
Carbon steel
Screwed (BSP/NPT/SW/BW)
A105N/1.0460
Lower sealing rings
Graphite laminate/Stainless steel
Upper sealing rings
Graphite laminate/Stainless steel
Lantern bush
Stainless steel
EN 1.4057/AISI 431
Piston
Stainless steel
EN 1.4057/AISI 431
Handwheel
Carbon steel
Handwheel nut
Carbon steel
Stud bolt
Carbon steel
ASTM A193 B7
10 Nut
Carbon steel
ASTM A194 2H
11 Washer
Stainless steel
12 Name-plate
Stainless steel
13 Belleville washer
Stainless steel
14 Blind nut
Carbon steel
TI-P118-06 CMGT Issue 7
Page 2 of 4
PV4 Piston Valve
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