Check Valves

Designed with tamper-proof qualities, this vent to atmosphere high-pressure relief valve is suitable for liquid or gas-based applications. With an encapsulated o-ring seal and narrow-band interchangeable springs, this relief valve eliminates seal extrusion, cold flow, and minimizes system pressure rise.

Designed with tamper-proof qualities, this high-pressure relief valve is suitable for most liquid or gas-based applications. With an encapsulated o-ring seal and narrow-band interchangeable springs, this relief valve eliminates seal extrusion, cold flow, and minimizes system pressure rise as flow demand increases.

Designed for high-pressure and severe service applications, this high-pressure check valve features a one-piece body and zero-leak capabilities. With a unique design that features a fully encapsulated O-ring seal with metal to metal backup, this check valve is ideal for long service life.

Designed with an integral bonnet, this forged needle valve features a PTFE and metallic wafer stem packing, which provides long-life and leak-tight service from vacuum to the maximum operating pressure.

Use these high-pressure poppet check valves in the most demanding applications, such as medical devices, products optimized for cryogenic applications, and severe service designs.

Designed with a free-floating O-ring for improved tolerance to particular contaminations, this high-flow, zero-leak, low-pressure check valve is suitable for fluid and gas applications. With metal-to-metal positive stops in both the open and checked position, this valve protects the O-ring and spring from over-stress fatigue.

Compact and featuring a one-piece body, this adjustable check valve is factory-tested for leakage, crack, and reseal performance. Ideally suited for oxygen service applications, this valve also features a fully retained O-Ring seal.

With dependable leak and bubble-tight options, this valve provides free flow in one direction and shut-off in the opposite direction. Encapsulated ball virtually eliminates flutter yet provides a positive check.

Particularly suitable for applications in instrumentation and control panels to open and close circuits or isolate gauges, this quick opening valve offers a unique design for full-closed to full-open operation with a 60° turn of the knob.

Unique, externally adjustable, and wear compensating, this screwed bonnet-type needle valve offers a long and trouble-free service life in most liquid or gas applications.