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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 for these sizes are supplied as spares.
Available spares Coupling
A
Diaphragm set
B , C
Diaphragm and sealing washer.
Needle bearing
D
Sealing bellows set
E , F , G, H
Sealing bellows assembly, sealing bellows gasket, bonnet gasket and head seal.
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.
Actuator spindle guide assembly Spindle guide, bearing bush, spindle seal 'O' ring, housing seal 'O' ring and circlip.
P, R, S, T,
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 DEP4B1 express pressure valve. How to fit spares Full fitting instructions are given in the Installation and Maintenance Instructions supplied with the spare(s).
J
4.6 86
K L G
H
E
I
F
R V
S Y
A
D
T
B
C
DN15 and DN20
TI-P206-01 CTLS Issue 13
Page 10 of 13
DEP4 Cast Steel Excess Pressure Valve
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