Lift Check Valves—50 Series  
Swagelok® lift check valves limit reverse flow under pressures up to 6000 psig (413 bar) and temperatures up to 900°F (482°C). Forward flow lifts the poppet, opening the valve. Reverse flow seats the poppet against the orifice, closing the valve. The Swagelok lift check valve is gravity assisted and must be mounted horizontally, with bonnet nut on top.

Specifications Working Pressure Temperature Forward Flow Coefficient Body Material Poppet Material End Connections •  Type •  Size

Up to 6000 psig (413 bar) –65 to 900°F (–53 to 482°C) 0.30 to 2.20 316 stainless steel S17400 stainless steel Swagelok tube fittings, female NPT, tube socket weld or pipe butt weld 1/4 to 3/4 in.; 6 mm

More Information
Download the Lift Check Valves—50 Series catalog.
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Features

• Rugged, all-stainless steel construction
• Union bonnet design
• Metal-to-metal seat
• No springs or elastomers
• Compact size
• Reverse flow coefficient less than 0.1 % of forward flow coefficient

Testing
Every Swagelok lift check valve is factory tested for proper operation.

Cleaning and Packaging
All Swagelok lift check valves are cleaned and packaged in accordance with Swagelok Standard Cleaning and Packaging (SC-10).

Options

• Special Cleaning and Packaging (SC-11)
  • Lift check valves are available cleaned and packaged in accordance with Swagelok Special Cleaning and Packaging (SC-11) to ensure compliance with product cleanliness requirements stated in ASTM G93 Level C.
• Special Alloys
• Many valve bodies are available in special alloys.