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Your current location: ProductsHydraulic Control ValvePressure Relief / Holding Valve

500X Pressure Relief / Holding Valve

Product overview

Product model: 500X
Nominal diameter: DN50~1000mm
Nominal pressure: PN1.0~2.5MPa
Applicable medium: water, oil, sea water, sewage
Applicable temperature: 0~80℃
Structure length standard: GB/T12221-2005
Standard of connection flange: GB/T9113
Pressure and temperature grade: GB/T12224-2005
Test inspection standard: GB/T13927-2008

500X Pressure Relief / Holding Valve product details

500X Pressure Relief / Holding Valve structure and use of features:

500X Pressure Relief / Holding Valve produced and sold by Baigang valve group consists of a main valve, pressure relief / pressure pilot valve needle, ball valve, microfilter and pressure gauge to form a hydraulic control takeover system. The use of hydraulic automatic operation, that can be used for pressure relief valve can also be used as holding pressure valve. For pressure relief valve used to maintain the water supply pressure below the set safety value; do holding pressure valve can maintain the main valve upstream of the water pressure above the set value, maintaining the water supply pressure upstream of the main valve. 
500X pressure relief valve using hydraulic self-control, do not need other devices and energy, easy maintenance, a valve and more. This series of valve products are widely used in high-rise buildings, living areas and other water supply pipe network systems and urban water supply projects.


500X Pressure Relief / Holding Valve works:

1, as the pressure relief valve: When the pressure relief valve / pressure regulator to adjust the state, the water through the needle valve, the main valve control room, ball valve A, pressure relief / holding pressure pilot valve, ball valve B to export, this time Main valve is open. When the inlet pressure exceeds the safety value set by the pressure relief / pressure holding pilot valve, the pressure relief pilot valve will open automatically and release part of the water through the valve C to relieve the pressure in the pipeline. The pressure relief valve closes automatically when the pressure returns to its safe value. For pressure relief valve, the ball valve normally open. 
2, as holding pressure valve: When the pressure relief valve / pilot pressure regulator to adjust the state, as long as the main valve inlet pressure below the pilot valve set, pilot valve is closed. The main control room pressure, the main valve is closed. When the pressure on the upstream of the main valve exceeds the set pressure of the pilot valve, the pilot valve can only be opened. The water in the control room is discharged to the outlet via the ball valve. The main valve of the control room is opened and the water supply is started, that is, the upstream hydraulic pressure is maintained. For holding pressure valve, ball valve C is normally closed or replaced with silk plug.


500X Pressure Relief / Holding Valve main technical parameters:

Nominal pressure (Mpa)

Shell test pressure (MPa)

Seal test pressure (MPa)

Suitable media

Medium temperature (℃)

1.0

1.5

1.1

water

0-80

1.6

2.4

1.76

2.5

3.75

2.75


500X Pressure Relief / Holding Valve main parts and materials:

Part Name

Parts and materials

Body valve cover

WCB

Valve seat disc

Copper alloy

O-ring seals

Nitrile rubber

Valve stem

2Cr13

spring

50CrVA

Needle valve

Copper alloy

Ball valve

Copper alloy

Pressure relief / holding pressure pilot valve

Copper alloy

Micro filter

stainless steel


500X Pressure Relief / Holding Valve connection size (PN 1.0-2.5MPa):


Nominal diameter DN

L

H

H1

A

B

50

250

335

90

170

170

65

280

345

98

180

180

80

310

355

110

190

190

100

350

365

120

200

200

125

400

445

145

215

215

150

450

460

155

230

230

200

550

505

190

255

255

250

650

550

250

295

295

300

800

710

290

325

325

350

900

725

330

380

380

400

1000

760

360

415

415

450

1000

810

445

435

435

500

1100

865

495

460

460

600

1100

935

550

520

520

700

1450

1000

605

570

570

800

1560

1100

730

620

620

900

1800

1205

800

670

670

1000

2000

1330

910

830

830



Reminder:

All text, data and pictures in this article are for reference only.To see more details of the 500X Pressure Relief / Holding Valve performance parameters, structural dimension parameters, pricing, etc., or to request high quality printing samples, please Contact us.

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