DP27 pilot operated pressure reducing valve.
Pressure Rating: 1.6- 2.5Mpa
Specification: DN15-150
Material: Steel WCB
Standard flanges: DIN, ANSI, JIS
DP27 Pilot operated pressure 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.
Note: A variable rate conical pressure adjustment spring is fitted providing a down stream pressure range of 0.2-17bar g.
Main Technical Parameters And Indexes Of Performance.
Nominal Pressure PN25
Maximum Design Pressure(PMA) 25bar g@120
Maximum Design Temperature(TMA) 232@21bar g
Minimum Design Temperature(TMI) -10
Maximum Upstream Pressure For Saturated Steam Service(PMO) 17 bar g
Maximum Operating Temperature(TMO) 232@21 bar g
Minimum Operating Temperature(TMIO) 0
Maximum Differential Pressure(PMX) 17bar
Down Stream Pressure Range 0.2-1.7 bar g
Maximum Cold Hydraulic Test Pressure 38 bar 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
Connection Dimension(mm).
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
