44
Control systems Pressure reducing/surplussing valves
Materials DN15 to DN50
12
11
19
13
15 14
20 18 17 16
4.6 96
No.
Part
Material
11
Pilot valve plunger
Stainless steel
BS 970 431 S29
12
Spring housing cover
Stainless steel
BS 1449 304 S12
Stainless steel
BS 970 431 S29
13
Pilot valve and seat unit
DP143G is stainless steel/nitrile
14 15 16
Internal strainer
Stainless steel
BS 1449 304 S16
Body gasket
Stainless steel reinforced exfoliated graphite
Main valve return spring
Stainless steel
BS 2056 302 S16
Stainless steel
BS 970 431 S29
17
Main valve
DP143G is stainless steel/nitrile
Stainless steel
BS 970 431 S29
18
Main valve seat
DP143G is stainless steel/nitrile
19
Balance pipe assembly
Stainless steel
BS 3605 304 S14
20
Main valve body
Cast steel
DIN 172 45 GS C25
For DN80 parts, see page 6
TI-P006-01 CTLS Issue 16
Page 4 of 12
DP143, DP143G, DP143H and DP143Y Pilot Operated Pressure Reducing Valves with Cast Steel Bodies
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