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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.

      +86-021-57278881
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