44
Control systems Pressure reducing/surplussing valves
Materials (continued)
17
18
20
DN65 to DN100
4.6 40
22 21
19
DN25
15
16
No.
Part
Material
15 16 17 18 19 20
Pillars
Steel zinc plated Steel zinc plated
BS 970 230 M07
Pillars nuts
BS 3693 Gr. 8
Spring adjuster
Cast iron zinc plated
DIN 1691 GG 25
Spring(s)
Chrome Vanadium
Bush (part of 20)
PTFE/steel composite
Sealing bellows assembly
Stainless steel
AISI 316(L)
DN15 and DN20 DN25 to DN100 DN25 to DN100
Stainless steel 'S' type
21
Sealing bellows gasket
Reinforced exfoiliated graphite
22
Clamp nut
Steel zinc plated
BS 970 230 M07
Materials continued on next page
TI-P203-01 CTLS Issue 20
Page 6 of 15
DRV4 and DRV4G Cast Steel Pressure Reducing Valves
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