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Control systems Pressure reducing/surplussing valves
Spare parts for the DN25 to DN100 valves The spare parts available for sizes DN25 to DN100 valves are detailed below. No other parts are supplied as spares. The listed parts are for the following valve types:
DRV4
Stainless steel seated
Valve assemblies
DRV4G
Nitrile soft seated
Types 1 to 5
EPDM diaphragm
Actuator assemblies
Types 1N to 5N
Nitrile diaphragm
Available spares Coupling
A
Diaphragm set
B , C
Diaphragm and sealing washer.
Needle bearing
D
Sealing bellows set DN65 to DN100.
E , F , R
Sealing bellows assembly, sealing bellows gasket, and clamp plate gasket
4.6 42
Control spring(s)
I
Seat/head set
DN25 to DN50
J , K , L , W , H , G
Seat, seat gasket, head, self-locking nut, head seal and bonnet gasket.
Head, self-locking nut, head seal, bonnet gasket and balancing bellows gasket.
Head set
DN65 to DN100
L , W , H , G , M
Balancing bellows assembly, balancing bellows gasket, bonnet gasket, head seal, self-locking nut, and sealing bellows gasket.
DN25 to DN50
N , M , G , H , W , F
Balancing bellows set
Balancing bellows assembly, balancing bellows gasket, bonnet gasket, self-locking nut and head seal.
DN65 to DN100
N, M, G, W, H
Sealing bellows gasket, bonnet gasket, seat gasket and balancing bellows gasket.
DN25 to DN50
F, G, K, M
Gasket set
Sealing bellows gasket, bonnet gasket, balancing bellows gasket and clamp plate gasket.
DN65 to DN100
F, G, M, R
How to order spares Always order spares by using the description given in the column headed 'Available spares' and state the size and type of valve. Example: 1 - Gasket set for a Spirax Sarco DN25 DRV4B1 pressure reducing valve.
How to fit spares Full fitting instructions are given in the Installation and Maintenance Instructions supplied with the spare(s).
TI-P203-01 CTLS Issue 19
Page 8 of 11
DRV4 and DRV4G Cast Steel Pressure Reducing Valves
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