44
Control systems Control valves
Materials - DN125 to DN300 (6" to 12") (continued)
Body material
Type
No. Part
Material
All others
Stainless steel
AISI 431
Plug and stem assembly
3
KE63
Stainless steel
AISI 316L
Seating version W
Stellite TM 6
4
Cage
Stainless steel
Seating version T
Stainless steel
AISI 431 S29
Valve seat ring
6
Seating versions P
PEEK
All others
Stainless steel
Stellite TM 6
9
Bearing
Stellite TM
10 Spacer (not used in DN125 valves)
Stainless steel
11 Gland nut
Stainless steel
AISI 416
14 Washer
Stainless steel
AISI 316L
15 Bonnet gasket
Stainless steel/graphite
16 Seat gasket
Stainless steel/graphite
4.1 44
20 Stem nut
Stainless steel
AISI 316
All versions
KE43 KE63 KE73
Carbon steel
BS EN ISO 898-1 Grade 8.8
Stainless steel
A2-80
Standard bonnet nut
Carbon steel
BS EN ISO 898-1 Grade 8.8
21
KEA43 Carbon steel KEA63 Stainless steel
ASTM A194 2H
ASTM A194 8M
High temperature bonnet nut
Stainless steel
DIN ISO 3506 A2
KE43 KE63 KE73
Carbon steel
BS EN ISO 898-1 Grade 8.8
Stainless steel
A2
Carbon steel
BS EN ISO 898-1 Grade 8.8
Standard stud
KEA43 Carbon steel KEA63 Stainless steel
22
ASTM A193 B7
ASTM A193 B8M2
KE43 KE73
High temperature bonnet nut
Stainless steel
DIN ISO 3506 A2-80
8
Spring
Stainless steel
12 Chevron packing set
PTFE
PTFE gland versions
17 Stem 'O' ring
Viton TM
18 Bonnet 'O' ring
Viton TM
High temperature gland versions
26 Gland packing
Graphite
3a Plug and stem assembly
Stainless steel
Balanced versions
29 Cage
Stainless steel
31 Balanced seal
Graphite
TI-S24-73 CTLS Issue 4
Page 4 of 15
Spira-trol TM Two-port Control Valves K Series DN125 to DN300 and 6" to 12"
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