All-Welded Check Valves, CW Series - SWAGELOK - #1

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www.swagelok.com Features �¡ All-welded design provides reliable containment of system fluid. �¡ 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. �¡ 316L SS body offers enhanced material purity. �¡ Choice of standard or high-purity wetted surface finishes. �¡ Processing in accordance with Swagelok® Ultrahigh-Purity Process Specification (SC-01) is available. �¡ Tube butt weld, female VCR® fitting, integral male VCR fitting, rotatable male VCR fitting, and Swagelok tube fitting end connections are available. Materials of Construction All components are wetted. . Bodies with tube butt weld ends are 316L VAR SS/SEMI F200305 High- Purity, 20 % minimum elongation allowed. . Aflas®, Buna N, ethylene propylene, and neoprene also available; see Options. . Material Safety Data Sheet for bonding agent available on request. 2 3 4 1 Al l -Welded Check Valves CW Ser ies Component Material Grade/ASTM Specification 1 Body 316L SS/A479. 2 Poppet Fluorocarbon FKM.-bonded. 316 SS/A479 3 Guidance wafer Alloy X-750/B637 4 Poppet stop 316L SS/A240 Technical Data Cracking Pressure psi (bar) Maximum Back Pressure psig (bar) Maximum Pressure Drop psi (bar) Minimum Burst Pressure at 70°F (20°C) psig (bar) Flow Coefficients (Cv) Less than 2 (0.14) Full pressure rating 145 (10.0) 12 000 (826) 0.55 (1/4 in., 6 mm Swagelok tube fitting and tube butt weld ends) 0.70 (1/4 and 1/2 in. VCR fittings, 3/8 and 1/2 in. tube butt weld ends) Pressure-Temperature Ratings Material Name 316L SS Temperature °F (°C) Working Pressure psig (bar) –10 (–23) to 100 (37) 200 (93) 300 (148) 400 (204) 3000 (206) 2530 (174) 2270 (156) 2065 (142) Flow Data at 70°F (20°C) Pressure Drop psi (bar) Air Flow std ft3/min (std L/min) 0.55 Cv 0.70 Cv 10 (0.68) 6.2 (170) 7.9 (220) 50 (3.4) 16 (450) 21 (590) 100 (6.8) 29 (820) 37 (1040) ð® For valves not actuated for a period of time, initial cracking pressure may be higher than the set cracking pressure. ð® Check valves are designed for directional flow control only. Swagelok check valves should never be used as code safety relief devices.