Spirax Sarco DP143, Installation And Maintenance Instructions Manual

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IM-P006-07 CTLS Issue 12
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6.2 Spare parts
The spare parts available are shown in heavy outline. Parts shown in a grey line are not supplied as spares.
Available spares
Main diaphragm (2 off) * A
Pilot diaphragm (2 off) * B
Pilot valve seal assembly C
Pilot valve and plunger assembly * D, E
Main valve assembly F, H
Main valve return spring * G
Pressure adjustment spring Choice of spring to suit
reduced pressure
Red 0.2 to 17 bar
J Grey
DP143 16.0 to 24 bar
DP163 16.0 to 21 bar
Yellow DP163Y 0.2 to 3 bar
Control pipe assembly * K
Balance pipe assembly M, N
Body gasket (packet of 3) * O
Set of spring housing securing studs and nuts (set of 4) P
Set of pilot valve housing securing studs and nuts (set of 4) Q
Set of diaphragm chamber securing bolts and nuts
DN15 and DN20 set of 10
R
DN25 and DN32 set of 12
DN40 and DN50 set of 16
DN80 set of 20
Set of main body studs. Nuts (DN80) (set of 6) T
Push rod and main diaphragm plate assembly V
Maintenance kit: *
A stand-by set of spares for general maintenance purposes and covers all spares marked (*)
How to order spares
Always order spare parts by using the description given in the column headed 'Available spares' and state
the size, model number and pressure rating of the valve.
Example: 1 off Maintenance kit for a DN15 DP143 pilot operating pressure reducing valve having a pressure
rating of 2 bar.