Pressure Relief Valve(Double Chamber)

Pressure Relief Valve(Double Chamber)

ZhengFeng Pressure Relief Valve(Double Chamber) is used for fire test circulation systems and other water supply systems in high-rise buildings.

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Application

Product Scope: NPS 2” ~ NPS22” , 10bar ~ 25bar

Features:

Accurate Pressure Control

Fast Opening to Maintain Line Pressure

Slow Closing to Prevents Surges

Minimal External Accessories


Face to Face Dimensions:AMSE B16.10

Flange End Dimension :AMSE B16.10

Coating: Fusion Bonded Epoxy Coating 

Inspection and Test:API 598 / ISO 5208 / EN 12226-2


Part

Material

EN Spec.

Body

Ductile Iron

EN-JS1050

Bonnet

Ductile Iron

EN-JS1050

Trim

Stainless Steel 420

Stainless Steel 431

BS970 420S37

BS970 431S29

Seat

Stainless Steel 420

Stainless Steel 431

BS970 420S37

BS970 431S29

Diaphragm

EPDM / NBR

Commercial

For materials options not listed,consult factory.

ZhengFeng manufactures valves in more than 50 different alloys.


NPS

In

2

2 1/2

3

4

5

6

8

10

12

14

16

18

20

22

L

mm

210

230

260

292

320

380

500

605

725

733

914

978

1075

1219

H1

mm

160

190

226

260

318

345

410

531

640

700

720

781

830

916

H

mm

90

100

110

120

130

150

180

215

235

265

300

330

370

430

A1

mm

135

140

161

170

178

209

230

248

293

335

335

370

416

470

A

mm

226

243

263

290

320

356

410

466

510

571

633

690

776

908


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