44
Materials - DP27 and DP27Y (continued) Control systems Pressure reducing/surplussing valves
33
4.6 170
31
28
32
26
30 29
27
No.
Part
Material
26
Main diaphragm chamber - upper
SG iron
BS EN 1563 EN-GJS-400-18-LT (5.3103)
27
Main diaphragm chamber - lower
SG iron
BS EN 1563 EN-GJS-400-18-LT (5.3103)
Securing nuts
Steel
BS 3692 Gr. 8
Steel
BS 3692 Gr. 8.8
28
Main diaphragm
Securing bolts
DN15 to DN32
M12 x 50 mm
DN40 and DN50
M12 x 55 mm
29 30
Main diaphragms
Phosphor bronze
BS 2870 PB 102 1980
Main diaphragm plate
Hot brass stamping
BS EN 12165 CW617N
31
Pushrod
Stainless steel
BS 970 431 S 29
32
Lock-nut
Steel
BS 3692 Gr. 8
33
Control pipe assembly
Brass and copper
34
Note: This item is hidden from view
Plug 1/8 "
BSP
Steel
TI-P470-01 CTLS Issue 13
Page 6 of 16
DP27, DP27E, DP27G, DP27GY, DP27R & DP27Y Pilot Operated Pressure Reducing Valves with SG Iron Bodies
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