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

Materials: 316 Stainless Steel: body, cover, sleeve, cover gland. 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: Special material check valves may be supplied with four flats in place of standard hex.

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.
Unit of Measure

Fits Connection Type


Pressure Rating

N/A 20000 psi1378.93 bar


N/A 0.359 in9.12 mm

Rated Cv

N/A 0.212

A - Length

N/A 4.18 in106.17 mm

B - Length

N/A 3.50 in88.90 mm

C - Length

N/A 0.53 in13.46 mm

D - Typical Hex

N/A 0.94 in23.88 mm


N/A 1.38 in35.05 mm

Tubing Engagement Depth

N/A 0.81 in21.0 mm