D17PPressure reducing valvewithbalanced seat
2
EN0H-1009GE23R0513 • Subject to change
Methodof Operation
Spring loadedpressure reducing valves operate bymeans of a
force equalising system. The force of a diaphragmoperates
against the force of an adjustment spring. If the outlet pressure
and therefore diaphragm force fall becausewater is drawn, the
then greater force of the spring causes the valve to open. The
outlet pressure then increases until the forces between the
diaphragm and the spring are equal again.
The inlet pressurehasno influence ineither openingor closingof
the valve. Because of this, inlet pressure fluctuation does not
influence theoutlet pressure, thusproviding inlet pressurebalan-
cing.
Options
D17P-... B = WithPN25 flangedconnections toDIN2534and
BS4504, spherolitic cast iron housing
Special Versions available on request
Connection size
Connection size
DN 50
65
80
100
150
200
Weight
kg
16.2
28.2
41.5
67
150
408
Dimensions
mm
L
230
290
310
350
480
600
H 282
315
356
418
573
1340
h
106
126
154
183
248
305
F
165
185
200
235
300
360
k
vs
-value
m
3
/h
28
47
70
110
250
380
Accessories
FY71P Strainer
With doublemesh, cast steel housing
B=Mesh size approximately 0.5mm
FY71P
