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Swagelok offers a broad line of adjustable and fixed cracking pressure check valves to control back flow in general-service, high-purity, and sanitary applications.
Swagelok® spring-and-poppet check valves are available with nominal cracking pressures ranging from 1/3 to 600 psi (0.03 to 41.4 bar) in 316 stainless steel and brass and with end connections 1/8 to 1 in. and 6 to 25 mm in size.
Working Pressure Temperature Nominal Cracking Pressure• Fixed • Adjustable Flow CoefficientBody Material Seal Material End Connections • Type • Size
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.
Working PressureTemperature Forward Flow CoefficientBody MaterialPoppet MaterialEnd Connections• Type• Size
Up to 6000 psig (413 bar)–65 to 900°F (–53 to 482°C)0.30 to 2.20316 stainless steelS17400 stainless steelSwagelok tube fittings, female NPT, tube socket weld or pipe butt weld1/4 to 3/4 in.; 6 mm
With all-welded 316L stainless steel body and springless design, the Swagelok® CW series high-purity check valve is designed for clean operation and reliable fluid containment.
Working PressureTemperatureCracking PressureMaximum Back PressureMaximum Pressure DropMinimum Burst Pressure at 70°F (20°C)Flow CoefficientBody MaterialEnd Connections• Type• Size
Up to 3000 psig (206 bar)–10 to 400°F (–23 to 204°C)Less than 2 psi (0.14 bar)Full pressure rating145 psi (10.0 bar)12 000 psig (826 bar)0.55 and 0.70316L stainless steelTube butt welds, VCR® face seal fittings, Swagelok tube fittings1/4 to 1/2 in.; 6 mm
CHP series UHP fluoropolymer check valves provide low cracking and reseal pressure and contain wetted components that meet SEMI Standard F57-0301 for ultrahigh-purity system components.
Working PressureMedia TemperatureBody Material• Small Body• Medium BodyFlow CoefficientCracking Pressure• Small Body• Medium BodyReseal PressureEnd Connections• Types• Sizes
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Swagelok biopharm fittings are inspected by an independent third-party inspection service, Purity Systems Incorporated, to meet ASME-BPE fitting standards.
Use this tool to search for your third party inspection documentation. Simply enter the lot number marked on the product and click search. Links to inspection documentation will be displayed below.
Search Swagelok Biopharm Services Company's material test report documentation by the heat number marked on the fitting.
Search Swagelok Biopharm Services Company's rubber gasket compliance report documentation by the lot number marked on the gaskets.