Axial Flow, Nozzle Style, Non-Slam Check Valves

Product Announcement from DFT Inc.

The DFT® Model GLC® Silent Check Valve is a spring-assisted, center guided, dual guided, non-slam, flanged check valve that provides reliable, low maintenance service for a wide range of fluids and pressure/temperature combinations. The valve consists of a body, seat, spring, disc with stem and guide bushing. Some valves have O-ring or gasket body seals. The DFT GLC check valve has the advantage of minimum pressure loss with silent operation.

View DFT's Video: GLC vs. Swing Check Valve and see the how the GLC prevents water hammer vs. a swing check valve.

Valve Features:

  • Axial flow
  • Nozzle style
  • "Short" Face-to-Face dimensions
  • API 6FD Fire Test
    • ASME 150 and 300
    • 2" to 42"
  • Standard body materials:
    • A216 Grade WCB carbon steel
    • A351 CF8M stainless steel
  • Optional body materials:
    • Alloy 20
    • Hastelloy®
    • Monel
    • Nickel-Aluminum Bronze (NAB)
  • One piece body
  • Spring-assisted silent closing, non-slam
  • Center guided
  • Dual guided stem
  • Horizontal or vertical installation
  • Protected spring
  • Easy maintenance
  • Versatile
  • ASME 150 To 2500
    - 1" to 24" Line size
    - 316 SS trim
    - RF Flanged Ends
    - MSS-SP61 seat leakage
  • Options
    • Inconel® X-750 Spring
    • Soft Seat
    • Custom Sizing-low flow
    • Body materials
    • Stellite trim (600 degrees F+)
    • RTJ Ends
    • NACE

DFT Incorporated - The "Check Valve Doctor" and the Control Valve Problem Solver

Contact us:


About DFT Inc.

DFT provides cost effective application engineering assistance, rapid prototyping and fast-turn initial production. Our staff responds quickly and our systems are designed to deliver reliably within our ISO9001-2008 quality management system. For more than 70 years DFT has solved check valve problems, prevented check valve failure and water hammer and solved severe service control valve problems.