Purge Valves

Purge Valves

Purge valves are manual bleed, vent, or drain valves, with a working pressure of up to 4,000 psig (276 bar). These valves feature a compact design, ease of installation, and are offered in various materials, connection types, and flow patterns. Safety features include a permanently assembled knurled cap and a crimped bonnet that prevents accidental disassembly. These valves facilitate the reduction of piping pressure to atmospheric levels, aiding in control equipment calibration.

Category:

Product Details

  • Product Name:Purge Valves
  • Materialof the Valve body: 316,316L,304,304L,321,Brass,Carbon Steel
  • End Connection Size:1/8″,1/4”,3/8”,1/2”,3/4”,1”,and 6 mm,8mm，10mm,12mm,14mm,16mm
  • Variousend connection Types:Two ferrules fittings,NPT, BSPT,Metric Thread,BSPP

 

Features

  • Compact design for easy installation
  • Bonnet crimped to valve body to prevent accidental disassembly
  • Working pressure up to:4000 psig (276 bar)
  • Working temperature:-65F to 600F(-54C to315C)
  • Leak-tight performance testing with nitrogen or compressedair for every valve at the maximum working pressure to meetthe requirement of no visible leak.Handles of different colors available

 

Application:

 

  1. Process System Pressure Relief and Venting

Application Description: Used in chemical, petrochemical, pharmaceutical, and other process equipment to safely discharge residual pressure or gas from pipelines or vessels.

Matching Features: All-metal seal, pressure resistance up to 4500 psig, suitable for high-pressure systems.

 

  1. Instrument and Sampling System Purging

Application Description: Installed before pressure gauges, transmitters, or sampling valves to purge pipelines, remove impurities, or replace media.

Matching Features: Compact structure, supports various connection types (NPT, BSPT, ferrules, etc.), flexible installation.

 

  1. Hydraulic and Pneumatic System Drainage

Application Description: Used for discharging condensate or impurities from hydraulic stations, air compressors, air storage tanks, and other equipment.

Matching Features: Packless design, adjustable discharge port direction, safe operation.

 

  1. Energy and Power Systems

Application Description: Boiler blowdown, steam pipeline drainage, gas turbine fuel line purging.

Matching Features: Wide temperature range (-65°F to 600°F), suitable for high-temperature media.

 

  1. Marine and Offshore Engineering

Application Description: Ballast water systems, fuel pipelines, lubricating oil system venting and purging.

Matching Features: Various materials such as 316 stainless steel and brass are available, resistant to seawater corrosion.

 

  1. Food and Pharmaceutical Industries

Application Description: Used in CIP (Clean-in-Place) systems, sterile pipeline drying, or media replacement.

Matching Features: Optional special cleaning and packaging , meeting hygienic requirements.

 

  1. Laboratories and Test Benches

Application Description: Media discharge or system purging in experimental setups and test loops.

Matching Features: Easy operation, quick open/close with a wrench, reliable sealing.

 

  1. Special Environment Applications

Application Description: Environments containing hydrogen sulfide (NACE MR0175 certified) or corrosive media systems.

Matching Features: Materials such as carbon steel, stainless steel, and brass are available, adapting to harsh conditions.

 

Caution:

During installation, the vent hole should be directed away from personnel to avoid media splashing.

Valves should be opened slowly to prevent sudden pressure drops.

The valve has no packing; slight weeping may occur when opened, requiring personnel protection.

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