Instrumentation & Tubing

Check Valves

316 stainless steel inline check valves rated to 6,000 psi WOG that stop reverse flow on instrument, injection and process lines.

Trilogy 1/4 inch 316 stainless steel inline check valves
Overview

About Check Valves

Trilogy inline check valves allow flow in one direction and stop reverse flow, protecting pumps, instruments and injection systems from backflow. A spring-loaded ball seats against a Viton O-ring for a positive seal, and the valve opens at a low 8 to 10 psi cracking pressure.

The 316 stainless steel body is rated to 6,000 psi WOG, with an NPT female inlet and male outlet for straightforward inline installation. Flow direction is marked on the body.

Specifications

Specifications at a Glance

Download Spec Sheet (PDF)
SpecificationDetail
Body316 stainless steel
Pressure rating6,000 psi WOG
ConnectionsNPT, female inlet x male outlet
Size shown1/4" NPT
Cracking pressure8 to 10 psi
Max. temperature248°F (120°C)
SealViton O-ring
Ball and spring304 stainless steel
Sizes and Specs

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Sizes and configurations vary by application. Send us the details below and our team will confirm the spec, check stock and come back with a firm quote.

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What to Include in Your Request

  • Connection size
  • End connections
  • Required pressure rating
  • Quantity
  • Service conditions (fluid and temperature)
Documentation

Spec Sheets and Downloads

Download the full spec sheet with dimensional drawings, or ask our team for material documentation for your order.

Check Valves Spec Sheet

PDF, includes dimensional drawings

Download

Material Documentation

Available on request

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