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Protects pressure gauges and pressure instrumentation from sudden surges in flow or venting in the event of line failure.

Materials: 316 Stainless Steel: body, cover, gland nut and sleeve. 300 Series Stainless Steel: ball

Vertical Installation: Since this type of check valve employs a non-spring loaded ball, valve MUST be installed in VERTICAL position with arrow on valve body pointing UP. (cover gland up).

Resetting Valve: Equalize the pressure across the ball. The ball will drop and reset automatically.

Caution: While testing has shown O-Rings to provide satisfactory service life, both cyclic and shelf life may vary widely with differing service conditions, properties of reactants, pressure and temperature cycling and age of the O-ring. FREQUENT INSPECTIONS SHOULD BE MADE to detect any deterioration, and O-rings replaced as required.

Caution: See Tubing section for proper selection of tubing.
Note: For optional material see Technical Information.

Note: All check valves are furnished complete with connection components unless otherwise specified.

All dimensions for reference only and subject to change.
For prompt service, Autoclave stocks select products. Consult your local representative.
All general terms and conditions of sale, including limitations of our liability, apply to all products and services sold.
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Item #

Fits Connection Type

Pressure Rating


Rated Cv

Add To Cart/Request Quote
SWK2202 N/A W125 N/A 15000 psi1034.19 bar N/A 0.094 in2.39 mm N/A 0.012 Request Quote
SWK4402 N/A SW250 N/A 15000 psi1034.19 bar N/A 0.188 in4.78 mm N/A 0.037 Request Quote
SWK6602 N/A SW375 N/A 15000 psi1034.19 bar N/A 0.250 in6.35 mm N/A 0.104 Request Quote
SWK8802 N/A SW500 N/A 10000 psi689.46 bar N/A 0.375 in9.53 mm N/A 0.212 Request Quote
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