Check Valves
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High-Purity Welded Check Valves
▪ End Connection Size 1/4″ to 1/2″, 6 mm to 12 mm
▪ Max. Working Pressure: 207 bar (3000 psig)
▪ Flow Coefficient (Cv): 0.55 or 0.70
▪ Cracking Pressure: Less than 2 psig (0.14 bar)
▪ Max. Pressure Drop: 145 psig (10 bar)
▪ Standard or high-purity wetted surface finishes for choice
▪ All-welded design provides reliable containment of system fluid
▪ Standard roughness Ra 20μin. (0.51μm) or electropolished to Ra 10μin. (0.25μm) for option
▪ Stainless steel 316L, 316L VAR, 316L VAR-VIM material
▪ NACE compliant materials and oxygen clean available
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Poppet Check Valves – Fixed Cracking Pressure
▪ Working pressure up to 3000 psig (207 bar)
▪ Working temperature -23°C to 190°C (-10°F to 375°F)
▪ End connections: 1/8″ to 1″, 6 mm to 12 mm
▪ End types: tube fitting, male/female NPT, BSPT, BSPP, MR fitting, tube butt weld
▪ Cracking pressure: 1/3 to 25 psig (0.02 to 1.7 bar)
▪ Resilient O-ring seat design for leak free sealing
▪ Fixed cracking pressure, mountable in any directions
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Stainless Steel Check Valves – Fixed Cracking Pressure
▪ Working pressure up to 6000 psig (414 bar)
▪ Working temperature -23°C to 204°C (-10°F to 400°F)
▪ End connections: 1/8″ to 1″, 6 mm to 25 mm
▪ End types: tube fitting, male/female NPT, BSPT, BSPP, MR fitting, tube butt weld etc.
▪ Cracking pressure: 1/3 to 25 psig (0.02 to 1.7 bar)
▪ Seat ring continuously cleaned by media, avoiding secondary pollution
▪ Mountable in any directions, NACE MR0175 available
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Lift Check Valves – Fixed Pressure
▪ Working pressure up to 6000 psig (414 bar)
▪ Working temperature -53°C to 482°C (-65°F to 900°F)
▪ End connections: 1/8″ to 3/4″, 6mm, 1/4xSCH80, 3/8xSCH80, 1/2xSCH80
▪ End types: fractional tube fitting, metric tube fitting, male MR fitting
▪ 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
▪ NACE MR0175 available
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One-Piece Check Valves – Fixed Cracking Pressure
▪ Working pressure up to 3000 psig (207 bar)
▪ Working temperature -23°C to 190°C (-10°F to 375°F)
▪ End connections: 1/8″ to 1/2″
▪ End types: male NPT, female NPT, male BSPT, female BSPT
▪ Cracking pressure: 1/3 to 25 psig (0.02 to 1.7 bar)
▪ One piece body, Compact design
▪ Mountable in any directions, NACE MR0175 available
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One Piece Check Valves – Adjustable Cracking Pressure
▪ Working pressure up to 3000 psig (207 bar)
▪ Working temperature -23°C to 190°C (-10°F to 375°F)
▪ End connections: 1/4″ to 1/2″
▪ End types: male NPT, female NPT, male BSPT, female BSPT
▪ Cracking pressure: 3 to 600 psig (0.2 to 41.4 bar)
▪ One piece body, Compact design
▪ Various springs available. Valves can be set and tested as per the specified cracking pressure
▪ Mountable in any directions, NACE MR0175 available
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Poppet Check Valves – Adjustable Cracking Pressure
▪ Working pressure up to 3000 psig (207 bar)
▪ Working temperature -23°C to 190°C (-10°F to 375°F)
▪ End connections: 1/4″, 6 mm and 8 mm
▪ End types: fractional tube fitting, metric tube fitting, male MR fitting
▪ Cracking pressure: 3 to 600 psig (0.2 to 41.4 bar)
▪ Various springs available
▪ Valves can be set and tested as per the specified cracking pressure
▪ Mountable in any directions, NACE MR0175 available
