DFT Inc.

DFT, formerly known as Durable Fluid Technology, has been making in-line check valves and severe service control valves for over 75 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.