Wafer Check Valves to Halt Water Hammer

Featured Product from DFT Inc.

More Info Email Supplier Request A Quote

DFT’s Model ALC® and WLC® Wafer Style Check Valves are designed to prevent water hammer and are the answer to unreliable double door / butterfly check valves problems. These silent check valves are lightweight, spring-assisted, center guided, non-slam check valves that provide reliable, low-maintenance service for a wide range of fluids and pressure/temperature combinations. They are able to be installed either vertically or horizontally.

  • No more door springs or hinge pin failures
  • No more leakage due to misalignment of the doors and seat
  • No more internal parts going downstream
  • No more reverse flow or water hammer

The DFT Model ALC® Wafer Check Valve Features:
This in-line, spring-assisted, center guided "wafer" check has a lightweight compact design that fits between mating flanges and meets API 594 Face-to-Face dimensions. The ALC® is an easy to maintain check valve for applications involving liquids, gasses or steam. Tapped holes are provided in the body for lifting lugs to assist with installation.

  • Sizes 2" thru 24" line size
  • ASME Class 150 and 300
  • API 594 face-to-face dimensions
  • RF Wafer ends
  • Horizontal or vertical installation
  • Standard body materials: 
     - A216 WCB 
     - A351 CF8M
  • Stainless steel seat, disc & bushing
  • Nitronic 60 stem
  • Inconel® X-750 spring
  • Tapped holes in body for lifting lugs
  • Seat leakage per MSS SP-61
  • Options 
      - 316 SS spring 
     - Soft Seat
     -* NACE
     - Custom sizing-low flow

For the ALC Features and Cut Sheet - Click here

 The DFT Model WLC® Wafer Style Silent Check Valve Features:

This lightweight, spring-assisted, center guided, non-slam check valve provides reliable, low-maintenance service for a wide range of fluids and pressure/temperature combinations. The joint between the seat ring and body is sealed by the flange gasket upon installation preventing any leakage through the joint when the valve is in service.

  • 1" to 10" line size
  • ASME 150 to 2500
  • RF & RTJ wafer ends
  • Center Guided/ Dual Guided Stem
  • Standard body material:
       - A216 Grade WCB carbon steel
       - A351 CF8M stainless steel
  •  Optional body materials:
    - Alloy 20
    - Hastelloy®
    - Inconel® 625
    - Duplex SS
    - Titanium

 For the WLC Features and Cut Sheet - Click here

About DFT Inc.

DFT Inc. manufactures world-class, problem solving, in-line, axial flow, nozzle style, silent check valves and severe service control valves. We provide 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 ISO9001-2015 quality management system. For more than seventy years DFT has solved check valve problems, prevented check valve failure and water hammer and solved severe service control valve problems.

For further information on all DFT’s Non-Slam, Silent Check Valves visit our website @ www.dft-valves.com, or contact us at: dft@dft-valves.com, or phone 1-800-206-4013.