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Home > Products > Valves > Check > High-Purity Check Valves

High-Purity Check Valves


Part No.:  6L-CW4FR4
Description:  316L SS High-Purity Check Valve, 1/4 in. Swagelok Female VCR Fitting, SC-11 Cleaned
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SPECIFICATION SUMMARY
Valve Material 316L Stainless Steel
End Connection 1 Size 1/4 in
End Connection 1 Type Female VCR®
End Connection 2 Size 1/4 in
End Connection 2 Type Female VCR®
Approval No Approval
Cleaning Swagelok SC-11
Cracking Pressure None
Lubricant No Lubricant
Seal Material Fluorocarbon FKM
Surface Finish Ra 10 µin
Testing No Optional Testing
Max Temperature Pressure Rating 150°F @ 2530 PSIG /65°C @ 174 BAR
Room Temperature Pressure Rating 3000 PSIG @ 100°F /206 @ BAR 37°C

MS-02-89FRPTKODEZHJAESEN
All-Welded Check Valves, CW Series
All-welded design provides reliable containment of system fluid; forward flow starts at less than 2psig (0.14 bar) pressure differential; valve closes with less than 2 psig (0.14 bar) back pressure; 316L SS body offers enhanced material purity.
(MS-02-89.pdf)

All-Welded, High-Purity Check Valves—CW Series

All-Welded High-Purity Check Valves-CW Series

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.


Specifications

Working Pressure
Temperature
Cracking Pressure
Maximum Back Pressure
Maximum Pressure Drop
Minimum Burst Pressure
at 70°F (20°C)
Flow Coefficient
Body Material
End 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 rating
145 psi (10.0 bar)
12 000 psig (826 bar)

0.55 and 0.70
316L stainless steel

Tube butt welds, VCR® face seal fittings, Swagelok tube fittings
1/4 to 1/2 in.; 6 mm

Features

CW Series Cutaway
  • Forward flow starts at less than 2 psig (0.14 bar) pressure differential.
  • Valve closes with less than 2 psig (0.14 bar) back pressure.
  • Choice of standard or high-purity wetted surface finishes.
  • Poppet is fluorocarbon FKM-bonded 316L stainless steel; other materials are available

CW Series Check Valve Process Specifications

Standard, no process designator: Special Cleaning and Packaging (SC-11)

  • Special cleaning with non–ozone-depleting chemicals
  • Performed in specially cleaned areas; valves are individually bagged
  • 20 µin. (0.51 µm) average, machine finished.

Ultrahigh-purity, process designator P: Ultrahigh-Purity Process Specification (SC-01)

  • Ultrahigh-purity cleaning with a continuously monitored, deionized water, ultrasonic cleaning system
  • Performed in ISO Class 4 work areas; valves are double bagged and vacuum sealed in cleanroom bags
  • 8 µin. (0.20 µm) average, machine finished and electropolished.

Testing

All CW series check valves are factory tested for crack and reseal performance.


Options

Aflas®, Buna N, ethylene propylene, and neoprene poppet bonding materials are available.

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