44
Control systems Control valves
Materials - Cast iron, SG iron and carbon steel valves
Material designation ASTM/DIN STD
Type
No.
Part
Material
1
Body
Cast iron
EN-GJL-250
Cast iron
Standard bonnet
SG iron
EN-GJS-400-18
2
Extended bonnet
Carbon steel
1.0460
1
Body
SG iron
EN-GJS-400-18
SG iron
Standard bonnet
SG iron
EN-GJS-400-18
2
Extended bonnet
Carbon steel
1.0460
1
Body
Carbon steel
1.0619
Carbon steel
Standard bonnet
Carbon steel
1.7131
2
Extended bonnet
Carbon steel
1.0460
3 4
Plug(s)
Stainless steel
BS 970 431 S29
Valve seats
Stainless steel
BS 970 431 S29
Valve stem
Stainless steel
BS 970 431 S29
5
Bellows
Stainless steel
AISI 316 L
4.1 116
6 7 8 9
Spacer
Stainless steel
AISI 304
Stuffing box gasket
Graphite
Lock-nut
Stainless steel
AISI 304
Stuffing box
Stainless steel
BS 970 431 S29
10
Mounting nut
Zinc plated steel
NFA 35553 XC 18S
Cast iron SG iron Carbon steel
11
Packing
PTFE/graphite
PTFE/graphite
12 13 14 15 16
Spring
Stainless steel
BS 2056 316 S42
Bonnet gasket
Graphite
Stud
Carbon steel
A193 B7M
Nut
Carbon steel
A194 Gr. 2H
Lock-nut
Stainless steel
AISI 316
17
Guide bush
PTFE
18 19 20
Stem guide bush
Stainless steel
Hardened AISI 440B
Lock-nut
Stainless steel
AISI 316
Pin
Stainless steel
AISI 316
21
Gasket
Graphite
22
Anti-rotation screw
Stainless steel
AISI 304
TI-P359-14 CTLS Issue 8
Page 4 of 11
QLM and QLD Three-port Control Valves
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