44
Control systems Pressure reducing/surplussing valves
Materials (continued)
19 Internal balance pipe
21
15
20 18 17 16
DN15 to DN50 (½" to 2")
4.6 108
22
No.
Part
Material
15
Body gasket
Stainless steel reinforced exfoliated graphite
16
Main valve return spring
Stainless steel
BS 2056 302 S25
17
Main valve
Stainless steel
BS 970 431 S29
18 19 20
Main valve seat
Stainless steel
BS 970 431 S29
Balance pipe assembly
Stainless steel
BS 3605 304 S14
Main valve body
Stainless steel
BS 3100 316 C12
Securing nuts
Stainless steel
BS 6105 A4/80
Stainless steel
BS 6105 A4/80
21
DN15 to DN20 (½" to 2")
M10 x 25 mm
Pilot valve housing
Securing studs
DN25 to DN50 (1" to 2")
M12 x 30 mm
DN80 (3")
M12 x 40 mm
22
Main diaphragm chamber
Cast stainless steel
BS 3100 316 C12
Materials continued on the next page
TI-P107-01 CTLS Issue 13
Page 4 of 14
DP163, DP163G and DP163Y Pilot Operated Pressure Reducing Valve with Stainless Steel Bodies
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