Control systems Pressure reducing/surplussing valves
4
Materials (continued)
44
DN15 and DN20
DN65 to DN100
4.6 43
43
40
41
39
46
DN25
45
42
38
No.
Part
Material
38 39 40 41 42 43 44 45 46
Diaphragm clamp
Stainless steel
ASTM A351 CF8M BS 1449 Pt1 HR14
Piston
Steel zinc plated Steel zinc plated Steel zinc plated Steel zinc plated Stainless steel Stainless steel Stainless steel
Spindle
BS 970 230 M07
Mounting nuts
BS 3692 Gr. 8
Coupling
Thread insert
DN15 and DN20 DN25 to DN100 DN65 to DN100 DN65 to DN100
DTD 734
Self-locking nut
BS 6105 A2
Clamp plate
ASTM A276 316L
Clamp plate gasket
Reinforced exfoliated graphite
TI-P203-01 CTLS Issue 20
Page 9 of 15
DRV4 and DRV4G Cast Steel Pressure Reducing Valves
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