DFT Inc. - Check & Control Valve Manufacturer

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DFT Inc. - Check & Control Valve Manufacturer DFT Inc. manufactures world class, problem solving, in-line, axial flow, nozzle style silent check valves and severe service control valves.

Keep up-to-date on the latest at DFT:
https://www.dft-valves.com/blog/ Whether it is "in stock", or a "custom engineered, special order", the DFT® sales and engineering staff will respond quickly to your requirements. DFT® is the only company that specializes in a broad spectrum of spring assisted, in-line silent check valves with materials ranging from ductile iron to exotic alloys, and are Made in America.

10/06/2026

Some applications need a check valve that requires more pressure to open. The DFT Restrictor Check Valve is engineered for exactly that.

With cracking pressures from 2 to 40 PSI, sizes from ¼" to 2½", and operating pressures up to 2,500 PSI, the RCV provides reliable higher cracking pressure performance for liquid and gas service. Stainless steel construction, silent spring-assisted closure, and installable in any orientation.

🎥 Watch the video to see how it's built and where it fits.

10/02/2026

A closer look at the DFT Basic-Check valve, available in sizes from ¼" to 2½", rated for pressures up to 6,000 PSI, and built for liquid, gas, and steam service.

Silent, non-slam closure. Stainless steel construction. An internal spring designed to exceed one million cycles. Low maintenance and installable in any orientation.

🎥 Watch the video to see what's inside.

Compressor discharge applications demand more from a check valve than most service conditions. Flow is pulsating, pressu...
09/24/2026

Compressor discharge applications demand more from a check valve than most service conditions. Flow is pulsating, pressures are high, and the consequences of a failed valve extend beyond the valve itself, to the compressor, the downstream piping, and the entire flow system.

The DFT Excalibur is a flanged check valve designed for gas transmission and petrochemical applications, engineered for tight shutoff and protection from reverse flow in exactly these conditions.

Its nozzle-style, spring-assisted design closes before flow reversal occurs, removing the pressure transient that damages seats, piping, and connected equipment. Built for severe duty with a single internal spring, reducing failure points across the valve's operating life.

For compressor discharge applications, valve selection is a reliability decision with system-wide implications.

Installation orientation is a variable that changes how a check valve behaves, and one that's often underweighted during...
09/15/2026

Installation orientation is a variable that changes how a check valve behaves, and one that's often underweighted during the selection process.

Gravity-dependent check valves are designed around horizontal flow. In vertical installations, particularly vertical flow-down configurations, the disc relies on spring force alone to close. A valve with an undersized spring, or no spring at all, may not close reliably, leaving the system exposed to reverse flow and pressure transients.

When specifying a check valve, installation direction belongs in the conversation alongside flow rate, pressure, and fluid type.

Gas transmission systems expose check valves to the full range of performance variables, pulsating compressor discharge,...
09/10/2026

Gas transmission systems expose check valves to the full range of performance variables, pulsating compressor discharge, varying pressure levels, corrosive gas compositions, and tight shutoff requirements across long-distance pipelines.

From reciprocating compressor discharge to metering pumps, pressure letdown, and pump discharge, each application carries its own flow characteristics and specification requirements.

DFT check valves are engineered for the specific demands of gas transmission, valve type, end connection, pressure rating, and material selection all factor into a specification that holds up in the field.

Reciprocating compressors produce pressure fluctuations on every stroke. A standard check valve wasn't designed to handl...
09/01/2026

Reciprocating compressors produce pressure fluctuations on every stroke. A standard check valve wasn't designed to handle that.

Each compressor cycle creates a momentary flow reduction, enough to move a conventional valve disc toward the seat, accelerating wear with every cycle. In high-cycle applications, that compounds fast.

The DFT PDC Silent Check Valve's pulse damping chamber keeps the disc open through each flow reduction, protecting the seat and extending service life across the compressor's full operating range.

Built specifically for reciprocating air and gas compressor discharge, not adapted from a general-purpose design.

Water hammer is a pressure surge, and it's more damaging than most teams realize until something fails.The shockwaves it...
07/09/2026

Water hammer is a pressure surge, and it's more damaging than most teams realize until something fails.

The shockwaves it generates can reach ten times normal system pressure, causing cumulative damage to valves, joints, and piping over time. Check valve type is often a direct contributing factor.

Spring-assisted check valves close before flow reversal occurs. Gravity-dependent designs wait for that reversal, and that's what creates the shockwave.

Learn more: https://hubs.la/Q04nqdrm0

Happy Independence Day from the DFT team.Wishing you a safe and enjoyable Fourth of July!
07/04/2026

Happy Independence Day from the DFT team.

Wishing you a safe and enjoyable Fourth of July!

Compressor systems are sensitive to pressure fluctuations caused by rapid changes in flow conditions. When check valves ...
06/18/2026

Compressor systems are sensitive to pressure fluctuations caused by rapid changes in flow conditions. When check valves rely on reverse flow to close, the resulting impact can introduce vibration and stress in both the compressor and downstream piping.

Closure timing plays a key role in how these systems respond during transient events. Early closure helps limit pressure disturbances and reduce mechanical loading.

DFT spring-assisted check valves are designed to initiate closure as forward flow decreases, protecting the compressor, supporting stable operation, and consistent flow control in gas systems.

Flow path design plays a key role in how fluid moves through a valve and how the system responds during changing conditi...
06/11/2026

Flow path design plays a key role in how fluid moves through a valve and how the system responds during changing conditions. Axial-flow check valves align with the direction of flow, helping reduce turbulence and maintain more consistent pressure profiles.

This design also supports and enables faster closure, which is important in systems where pressure fluctuations can affect performance. By minimizing disruption to flow, axial-flow designs help maintain stability across a range of operating conditions.

DFT axial-flow check valves are engineered with these principles in mind, supporting reliable performance in pipeline and process applications.

Address

140 Sheree Boulevard PO Box 566
Exton, PA
19341

Opening Hours

Monday 8:30am - 5pm
Tuesday 8:30am - 5pm
Wednesday 8:30am - 5pm
Thursday 8:30am - 5pm
Friday 8:30am - 5pm
Saturday 8:30am - 5pm

Telephone

(610) 363-8903

Website

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