Control systems Pressure reducing/surplussing valves
4
Materials DN15 to DN50
1 2 3 4 5 6
8 9 10
7
4.6 95
No.
Part
Material
1 2 3 4 5 6 7
Adjustment screw
Steel
BS 3692 Gr. 8.8
Adjustment lock-nut
Steel
BS 3692 Gr. 8
Washer
Stainless steel
BS 1449 304 S16
Spring housing
Cast steel
DIN 17245 GS C25
Top spring plate
Stainless steel
BS 970 220 Mo7
Pressure adjustment spring
Stainless steel
BS 2056 302 S25
Bottom spring plate
Stainless steel
EN 10088-3 1.4057
Securing nuts
Steel
BS 3692 Gr. 8
8
Spring housing
Steel
BS 4439 Gr. 8.8
Securing studs
DN15 to DN80
M10 x 30 mm
9
Pilot diaphragm
Stainless steel
BS 1449 316 S31
Steel DN15 to DN50
10
Pilot valve housing
DIN 17245 GS C25
DN80
GP 240 GH+N
For DN15 to DN50, parts 11 to 30, see pages 4 to 6
For DN80 parts, see page 6
TI-P006-01 CTLS Issue 16
Page 3 of 12
DP143, DP143G, DP143H and DP143Y Pilot Operated Pressure Reducing Valves with Cast Steel Bodies
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