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Check Valves

375 Extreme Environment Check Valve

This zero-leak check valve is only 0.375 inches in diameter and 1.5 inches in length and is designed for the extreme temperatures and pressures found deep within oil wells and in the depths of outer space. This valve can withstand high temperatures and pressures and is constructed of corrosion-resistant stainless steels. NACE compliant materials are also available.

Key Product Facts
  • Poppet-Style Check Valves
  • Diameter:0.375 inches
  • Lohm Rate:125 Lohms max
  • Operating Pressures:Up to 15,000 psi
  • Leakage:0 bubbles / minute at 500-15,000 psid

Product Information

General Performance
Characteristic Specification
Cracking Pressure 2 or 8 psid Maximum
Maximum Leakage in Checked Direction at 500-15,000 psid 0 Bubbles / Minute
Approximate Lohm Rate at 20 psid and Greater 125 Lohms
Nominal System Pressure Up to 15,000 psi (or Greater)
Test Fluid Air at 70°F
Flow Curve
Cross Section Views
Dimensional View
Installation Hole Details

Installation & Accessories

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From plugs to solenoid valves, there’s a vast array of products that The Lee Company can offer. If you’d like to discuss the best solution for your specific application or to learn more about our capabilities, use-cases, or quality standards, contact your local Lee sales engineer.