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DFT SCV® Threaded In-Line Check Valves
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DFT SCV® Threaded In-Line Check Valves


The DFT® Model SCV® is a corrosion-resistant, dependable, versatile, and economical spring-assisted, in-line check valve for a wide range of applications. Whether the fluid is liquid, gas or steam, the SCV® provides tight shut-off and protects other equipment in the system from water hammer. Its stainless steel construction ensures a long service life.


  • 1/2” to 3” Line size
  • 750 & 3600 CWP
  • NPT & SW ends
  • Stainless steel construction
  • Inconel® X-750 spring
  • Spring-assisted silent closing, non-slam
  • Zelon® “O” ring body seal
  • Horizontal or vertical installation
  • Body-guided disc
  • Tight shutoff lapped disc & seat
  • Simplified 5-part construction
  • Easy maintenance
  • Versatile
  • Options:
    • 316 SS springs
    • Body seal weld
    • Soft seat
    • Alloy 20 body & seat (ASME 300)
    • Hastelloy® C body & seat (ASME 300)
    • NPT x socket weld ends
    • SCV-R (higher cracking pressure)
    • NACE


DFT®, formerly known as Durabla® Fluid Technology, has been making in-line check valves and severe service control valves for over 70 years. It started with a customer’s need for a small metal-seated check valve that could be installed in any position while providing tight shut-off. The Basic-Check® valve was developed to satisfy that need. Over the following decades, other customers’ needs led to the development of the ALC®, BNC®, DLC®, DSV®, Excalibur®, FBC™, GLC®, GPV™, PDC®, SCV® , TLW® and WLC® styles of in-line silent axial flow check valves. Each of these DFT® in-line check valves addresses the particular needs of today’s customer.


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