Bonded-Poppet Check Valve with Fixed Cracking Pressure—CH Series
Swagelok® CH series bonded-poppet check valves feature 316 stainless steel construction and are available with ECE R110-type approval and for sour gas service.
More Information
Download the Check Valves—C, CA, CH, CP, and CPA Series catalog.
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Other Check Valves
Check valves with fixed cracking pressures—C and CP Series
Check valves with adjustable cracking pressure—CA and CPA Series
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Specifications
Working Pressure
Temperature
Nominal Cracking Pressure
Reseal Pressure
Flow Coefficient
Body Material
Seal Material
End Connections
• Type
• Size
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Up to 6000 psig (413 bar)
–50 to 400°F (–45 to 204°C)
1/3 to 25 psi (0.03 to 1.8 bar)
Up to 17 psi (1.2 bar) or more upstream pressure
0.67 to 4.7
316 stainless steel
Fluorocarbon FKM
Swagelok tube fittings, NPT, ISO, SAE/MS, VCO O-ring fittings, VCR face seal fittings
1/8 to 1 in.; 6 to 12 mm
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Testing
Every CH series check valve is factory tested for crack and reseal performance with a liquid leak detector. Check valves with fixed cracking pressures are cycled six times prior to testing. Every valve is tested to ensure it seals within 5 s at the appropriate reseal pressure.
Cleaning and Packaging
Every CH series check valve with VCR or VCO end connections is processed in accordance with Swagelok Special Cleaning and Packaging (SC-11) to ensure compliance with product cleanliness requirements as stated in ASTM G93 Level C.
All other CH series check valves are cleaned in accordance with Swagelok Standard Cleaning and Packaging (SC-10). Special cleaning and packaging is available as an option.
Options
Valves With ECE R110-Type Approval
Stainless steel CH series check valves with Buna C seals are available with ECE R110-type approval for use in alternative fuel service.
- Temperature rating: –40 to 185°F (–40 to 85°C)
- Pressure rating within the range: 3770 psig (260 bar)
Sour Gas Valves
CH series valves are available for sour gas service. Materials are selected in accordance with NACE MR0175/ISO 15156.
- Pressure rating at 70°F (20°C): 5000 psig (344 bar)
- Temperature rating: –50 to 300°F (–45 to 148°C)
Seal Materials
Fluorocarbon FKM is standard. Buna N, ethylene propylene, and neoprene O-ring and poppet bonding material are available.
Special Alloys
Springs of alloy 400 or alloy C-276 are available in some sizes. Valves of alloy 400, carbon steel, aluminum, or other alloys are available in some sizes.
Special Cleaning
Special cleaning and packaging in accordance with Swagelok Special Cleaning and Packaging (SC-11) to ensure compliance with product cleanliness requirements as stated in ASTM G93 Level C is available for valves with Swagelok tube fitting, NPT, ISO or SAE/MS end connections.
Maintenance Kits
Seal kits and spring kits are available.
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