All-Stainless Steel Union Bonnet Check Valves

All-Stainless Steel Union Bonnet Check Valves feature a rugged, all-stainless steel construction with a metal-to-metal seal. These valves are free of spring or elastomers, and their union bonnet design adds safety. The lift poppet is gravity-dependent, with a reverse flow coefficient of less than 0.1% of the forward flow coefficient. These valves prevent reverse flow up to 6000 psig (413 bar) and 900°F (482°C)..

Product Details

  • Product Name: All-Stainless Steel Union Bonnet Check Valves
  • Materialof the Valve body: 316
  • Inlet Size: 1/8″,1/4”,3/8”,1/2”,3/4”
  • Variousend connection Types:Two ferrules fittings,NPT, BSPT,Metric Thread,BSPP, Fractional Tube Butt Weld,Metric Tube Butt Weld, Pipe Butt Weld,Pipe Socket Weld,Rotatable Fractional Tube Butt Weld,Rotatable Metric Tube Butt Weld

 

Features

  • Working pressure up to: 6000 psig (414 bar)
  • Working temperature: -65°F to 900°F (-53°C to 482°C)
  • Rugged, all-stainless steel construction
  • Union bonnet design, horizontal installation with bonnet nut on top
  • Reverse flow coefficient less than 0.1% of forward flow coefficient

 

Application:

High-temperature and high-pressure steam systems

Inlet and outlet protection for petrochemical reactors

Boiler feedwater systems in the power industry

High-temperature gas pipelines (e.g., flue gas, hot air)

Corrosive media (acids, alkalis) transport systems

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