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Control systems Pressure reducing/surplussing valves
Spare parts for the DN15 and DN20 valves The spare parts available for sizes DN15 and DN20 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
E , F , G
Sealing bellows assembly, sealing bellows gasket and bonnet gasket.
4.6 40
Control spring(s)
I
Seat/head set
J , K , L , G, H
Seat, seat gasket, head, bonnet gasket and head seal.
Gasket set
F , G , K
Sealing bellows gasket, bonnet gasket and seat gasket.
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 DN15 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 6 of 11
DRV4 and DRV4G Cast Steel Pressure Reducing Valves
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