Spring-and-Poppet Check Valves—C, CA, CH, CP, and CPA Series
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.
Specifications Working Pressure
Temperature
Nominal Cracking Pressure
• Fixed
• Adjustable
Flow Coefficient
Body Material
Seal Material
End Connections
• Type
• Size |
Up to 6000 psig (413 bar)
–50 to 400°F (–45 to 204°C)
1/3 to 25 psi (0.02 to 1.7 bar)
3 to 600 psi (0.21 to 41.4 bar)
0.10 to 4.7
316 stainless steel, brass
Fluorocarbon FKM, Buna N
Swagelok tube fittings, NPT, ISO, SAE/MS, VCO® O-ring fittings, VCR® face seal fittings
1/8 to 1 in.; 6 to 25 mm |
C Series
The C series is a two-piece stainless steel or brass check valve
with O-ring body seal.
Specifications
Working Pressure
Temperature
Nominal Cracking Pressure
Flow Coefficient
Body Material
Seal Material
End Connections
• Type
• Size
|
Up to 3000 psig (206 bar)
–50 to 375°F (–45 to 190°C)
1/3 to 25 psi (0.03 to 1.8 bar)
0.10 to 4.48
316 stainless steel, brass
Fluorocarbon FKM, Buna N
Swagelok tube fittings, NPT, male VCR® face seal fittings
1/8 to 1 in.; 6 to 12 mm
|
Inlet Gaskets (2C, 4C, 6C, and 8C Series)
PTFE-coated 316 stainless steel inlet gaskets are available for
2C, 4C, 6C, and 8C series valves to reduce the possibility of dislodging
the O-ring in systems where pressure surges, shock, or pulses occur.
Gaskets are standard in 6C and 8C series valves with cracking pressures
greater than 50 psi (3.5 bar) and in 12C and 16C series valves.
CA Series
The CA series is a two-piece stainless steel or brass check valve
with O-ring body seal.
Specifications
Working Pressure
Temperature
Nominal Cracking Pressure
Flow Coefficient
Body Material
Seal Material
End Connections
• Type
• Size |
Up to 3000 psig (204 bar)
–50 to 375°F (–45 to 190°C)
3 to 50 psi (0.21 to 3.5 bar) through 350 to 600 psi (24.2 to 41.4 bar)
0.37
316 stainless steel, brass
Fluorocarbon FKM, Buna N
Swagelok tube fittings, male NPT, male VCR® face seal fittings
1/4 in.; 6 and 8 mm
|
Deflector Cap
A polyethylene deflector cap is available for CPA series valves with male NPT end connections. The deflector cap deflects flow from direct contact with personnel and prevents atmospheric contaminants from entering the valve.
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.
Specifications
Working Pressure
Temperature
Nominal Cracking Pressure
Reseal Pressure
Flow Coefficient
Body Material
Seal Material
End Connections
• Type
• Size
|
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
|
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.