Bleed Valves

Bleed Valves are used on instruments such as multi-valve manifolds or gauge valves to vent signal line pressure to the atmosphere before instrument removal or to assist in calibration. They support a working pressure of up to 10,000 psig (690 bar) and a temperature range of -65°F to 850°F (-54°C to 454°C). The compact design enables easy installation, and the hardened stem and tip extend the valve’s cycle life. A variety of connection types and sizes are available..

Product Details

  • Product Name:Bleed Valves
  • Materialof the Valve body: 316 ,316L,304,304L,321,ALloy C-276,Alloy 400,Carbon Steel
  • End Size:1/8″,1/4”,3/8”,1/2”
  • Variousend connection Types:Male NPT,Male BSPT

 

Features

  • Compact design for easy installation
  • Hardened stem and tip to extend cycle life
  • Working pressure up to: 10000 psig (690 bar)
  • Working temperature: -65℉ to 850℉ (-54℃ to 454℃)
  • Variety of end connections
  • Leak-tight performance testing with Nitrogen or compressed air for every valve at the rated pressure (not higher than 6000 psig) to meet the requirement of no visible leak

 

Application:

Instrumentation Pressure Relief

Used for multi-valve manifolds, gauge valves, and other equipment to vent signal line pressure to atmosphere before removal.

 

Calibration Assistance

Used during calibration to relieve system pressure, ensuring accurate zero-point calibration of instruments.

 

High-Pressure System Safety Venting

Suitable for systems with pressures up to 10,000 psig (690 bar), such as hydraulic test benches and pneumatic control systems.

 

High-Temperature Media Venting

Suitable for high-temperature systems within a range of -65°F to 850°F (-54°C to 454°C), such as steam and hot oil systems.

 

Chemical and Petrochemical Processes

Used for safe venting in reactors, storage tanks, and pipelines, with material options such as Alloy 400 and C-276 for corrosion resistance.

 

Natural Gas and Compressed Air Systems

Used at compressor outlets, gas storage tanks, and distribution pipelines to vent residual gas or reduce pressure.

 

Laboratory Test Systems

Used for pressure relief and system evacuation in high-pressure experimental setups and gas test circuits.

 

Marine and Aerospace Hydraulic Systems

Used in hydraulic power units and steering systems for pressure relief and maintenance venting.

 

Energy and Power Systems

Used for venting and pressure relief in boilers, steam pipelines, and gas turbines.

 

Special Environment Applications

Suitable for use in environments containing hydrogen sulfide (NACE MR0175 certified) or corrosive media with corresponding material selections.

 

Caution

During installation, the vent tube should be directed away from personnel to avoid media spray.

Open the valve slowly to prevent sudden pressure drops or media splashing.

This valve has a packless design; slight weeping may occur when opened. Operators must take appropriate protective measures.

If need specific selection recommendations for a particular industry (e.g., petrochemicals, power, laboratories), please provide further detailed guidance and contact our engineers.

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