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hi-100

Features of the DFT® HI-100® Severe Service Valve

Posted by Jeff Kane on

Severe service valves are used in applications involving periodic or extended exposure to extreme temperatures, high pressures, and/or abrasive, corrosive, or erosive compounds. Due to the harsh operating conditions to which they subjected, these valves often feature specialized construction materials and body designs to ensure they maintain their integrity during use. At DFT®, we’ve manufactured… Read More

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Common Causes of Swing Check Valve Failure and How to Diagnose and Resolve Them

Posted by Jeff Kane on

Swing check valves use a hinged swinging disc to block and control the movement of fluid in a system. As they are used to prevent the reverse flow of fluids or gases, any failure can lead to leakage, loss of pressure, contamination, overflow, and, in the most severe cases, complete system failure. Below we discuss… Read More

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Check Valve Diagram

Why Do DFT® Axial Flow Check Valves Inherently Reduce Water Hammer?

Posted by Jeff Kane on

Hydraulic shock—more commonly known as “water hammer”—occurs when the flow within a pipe is suddenly forced to change direction, which creates a pressure wave that can be characterized by a loud knocking or banging sound. In piping and process systems, water hammer often happens upon closing a valve to stop or redirect flow. It’s important… Read More

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New Technology at DFT

Posted by Jeff Kane on

DFT® Inc. is proud to announce the implementation of new advanced robotics technology to streamline the manufacturing process at our Exton, PA headquarters. This high technology robot provides the efficient production of lapped discs, which is an important manufacturing process at DFT, allowing for the tight metal-seated shutoff of our axial flow, spring-assisted check valves.… Read More


Check Valve Selection, Positioning, Orientation

Check Valve Installation

Posted by Jeff Kane on

Check valves play a critical role in preventing backflow and protecting sensitive equipment, pipes, pumps, and compressors. However, check valves can’t function at their best if they aren’t installed properly. Mistakes in installation can manifest in valve leakage or failure, compromising the integrity of the entire piping system.  Swing check valves, double-door check valve, or… Read More