Product: DP17 pilot operated pressure reducing valve
Pressure Rating: 1.6- 2.5Mpa Specification: DN15-50
Material: Steel WCB Standard flanges: DIN ANSI JIS JB79
This reducing valve is the new type pilot extra-huge membrane pressure reducing valve developed by our company. It is greatly improved on basis of normal pressure reducing valve. The membrane use new material, enlarging the working area, so the slight change of upper pressure or lower pressure can be fed back to membrane of main valve, and adjust the opening of main valve to ensure the constant pressure of lower stream pressure.
main technical parameters and indexes of performance
|
Nominal pressure
|
PN25
|
|
Maximun design pressure(PMA)
|
25bar g @ 120
|
|
Maximun design temperature(TMA)
|
232 @ 21bar g
|
|
Minimun design temperature(TMI)
|
-10
|
|
Maximun upstream pressure for saturated steam service(PMO)
|
17barg
|
|
Maximun operating temperature(TMO)
|
232 @ 21bar g
|
|
Minimun operating temperature(TMIO)
|
0
|
|
Maximun differential pressure( PMX )
|
17bar
|
|
Maximum cold hydraulic test pressure
|
38bar g
|
|
material of main component
|
Name of component
|
Material of component
|
|
Valve body, valve cover
|
WCB
|
|
Valve seat
|
2Cr13
|
|
valve flap
|
2Cr13
|
|
Valve rod
|
2Cr13
|
|
Membrane
|
Brass
|
|
Adjusting spring
|
60Si2Mn
|
|
connecting dimension
|
DN
|
L
|
H1
|
H
|
D
|
|
15
|
147
|
221
|
133
|
185
|
|
20
|
154
|
224
|
136
|
185
|
|
25
|
160
|
235
|
145
|
207
|
|
32
|
180
|
236
|
156
|
207
|
|
40
|
200
|
238
|
176
|
255
|
|
50
|
230
|
246
|
183
|
255
|
|
65
|
250
|
295
|
200
|
320
|
|
80
|
310
|
323
|
230
|
350
|
|
100
|
350
|
340
|
263
|
380
|
|
125
|
400
|
359
|
306
|
455
|
|
150
|
450
|
375
|
330
|
500
|
|
