Control systems Pressure reducing/surplussing valves
4
For 'Available spares', 'How to order' and 'How to fit' go to page 8
Interchangeability of spares The following table shows how in certain sizes some parts are interchangeable. For example in the line headed 'Main diaphragm' the diaphragm used in the screwed valves ½" and ¾" is common to these sizes by the letter 'a', the letter 'c' indicates that one diaphragm is common to the DN40 and DN50 valves. All spares are interchangeable with the DP17T and where marked † are interchangeable with the 37D temperature control.** ** Note: This does not apply to DP17G soft seat pilot valve or main valve assemblies.
Screwed
Flanged
*** ½"LC ½" ¾" 1"
** 15LC 15 20 25 32 40 50
Size DN
Maintenance kit
a
a a b
f
f
a b c d e
4.6 125
Main diaphragm
a
a a b
a
a a b b c c
Pilot diaphragms
†
a
a a a
a
a a a a a a
Pilot valve chamber assembly
a
a a a
a
a a a a b b
PTFE seals
a
a a a
a
a a a a a a
Main valve assembly
† † †
a
b c d
a
b c d e f
g
Internal strainer
a
a a b
f
f
a b c d e
Main valve return spring
a
a a b
a
a a b b c c
Pressure adjustment spring
a
a a a
a
a a a a a a
Control pipe assembly
†
a
a a b
f
f
a b c d e
Balance pipe assembly
a
a a b
f
f
a b c d e
Body gasket
†
a
a a a
a
a a a a b b
Set of spring housing securing studs and nuts
a
a a a
a
a a a a b b
Set of main body studs and nuts
† †
a
a a a
a
a a a a b b
Set of diaphragm securing bolts and nuts
a
a a a
a
a a a a b b
Push rod and main diaphragm plate assembly
a
a a b
a
a a b b c c
*** Not available for DP17G
TI-P208-01 CTLS Issue 4
Page 7 of 9
DPP17E and DPP17EE Pilot Operated Pressure Reducing Valves with SG Iron Bodies
Powered by FlippingBook