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Pilot Operated Pressure Reducing Valve

This reducing valve is latest type pilot pressure reducing valve with membrane. It is the modified form of normal pressure reducing valve. The membrane of new material enlarging the working area, so the higher pressure can be fed back to the membrane, and adjust the main valve to maintain the constant pressure of lower pressure stream.

Advantage
1. Especially suitable for steam and water.
2. Max inlet pressure: 16 bar, 25 bar.
3. Outlet pressure (Springs pressure setting rang) Yellow: 0.2 to 3 bar; Blue: 2.5 to 7 bar; Red: 6 to 12 bar.
4. Diameter: 15-200 mm.
5. Medium temperature: 0-285 ℃.
6. Max rate inlet pressure/ outlet pressure: 20:1.
7. DIN, ANSI, GB


Name of component

Material

Valve body, valve cover

WCB

Valve seat

2Cr13

Valve flap

2Cr13

Valve rod

2Cr13

Membrane

Brass

Adjusting spring

60Si2Mn

Pressure sensing pipe

Brass


PN 16

DN

Main connection size

L

H1

H

L1

D

D1

D2

b

f

n-Φd

15

147

235

145

185

95

65

45

16

2

4-Φ14

20

154

235

145

185

105

75

58

18

2

4-Φ14

25

160

235

145

207

115

85

68

18

2

4-Φ14

32

180

235

145

207

140

100

78

18

2

4-Φ18

40

200

240

180

255

150

110

88

18

3

4-Φ18

50

230

240

183

255

165

125

102

20

3

4-Φ18

65

250

295

200

320

185

145

122

20

3

4-Φ18

80

310

232

230

350

200

160

138

20

3

8-Φ18

100

350

320

240

380

220

180

158

20

3

8-Φ18

125

400

352

315

430

250

210

188

22

3

8-Φ18

150

450

364

334

455

285

240

212

22

3

8-Φ22

200

500

384

354

510

340

295

268

24

3

12-Φ22

PN 25

DN

Main connection size

L

H1

H

L1

D

D1

D2

b

f

n-Φd

15

147

235

145

185

95

65

45

16

2

4-Φ14

20

154

235

145

185

105

75

58

18

2

4-Φ14

25

160

235

145

207

115

85

68

18

2

4-Φ14

32

180

235

145

207

140

100

78

18

2

4-Φ18

40

200

240

180

255

150

110

88

18

3

4-Φ18

50

230

240

183

255

165

125

102

20

3

4-Φ18

65

250

295

200

320

185

145

122

22

3

8-Φ18

80

310

232

230

350

200

160

138

24

3

8-Φ18

100

350

320

240

380

235

190

162

24

3

8-Φ22

125

400

352

315

430

270

220

188

26

3

8-Φ26

150

450

364

334

455

300

250

218

28

3

8-Φ26

200

500

384

354

510

360

310

278

30

3

12-Φ26


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