The DFT® Model DLC® 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 DLC® provides tight shut-off and protects other equipment in the system from water hammer. Its stainless steel construction insures a long service life.
Inconel® X-750 spring is standard

Standard Features:

• 1/2" to 3" Line size
• ASME Class 150 and 300
• Standard Body Material A351 CF8M
• Stainless Steel Construction
• ANSI B16.10 Face-to-Face Dimensions
• Raised Face Flanged Ends
• Inconel® X-750 Spring
• Electron Beam Welded Body
• Spring-Assisted Silent Closing, Non-Slam
• Horizontal or Vertical Installation

The DFT® Excalibur® Silent Check Valve is a spring-assisted, center guided, in-line, check valve that provides reliable, low maintenance service for a wide range of fluids and pressure/temperature combinations. The valve consists of a body, gasket, seat, spring, disc with stem and guide bushing. Excalibur® check valves are available in a wide range of sizes and pressure ratings and in a variety of metals to meet most check valve requirements.

Standard Features:

• 2" to 24" Line size
• ASME Class 150 to 1500
• ASME B16.10 Face-to-Face Dimensions
• Standard Body Materials:
• A216 Grade WCB Carbon Steel
• A351 CF8M Stainless Steel
• Other Options Available
• Standard Ends are RF Flanged
• Optional Ends (4): Butt Weld, Flanged x Butt Weld, RTJ, Victaulic®
• Center-Guided / Dual-Guided Stem
• Two-Piece Body
• Horizontal or Vertical Installation

The DFT® Model GLC® Silent Check Valve is a spring-assisted, center guided, in-line, flanged check valve that provides reliable, low maintenance service for a wide range of fluids and pressure/temperature combinations. The valve consists of a body, seat, spring, disc with stem and guide bushing. Some valves have body or gasket seals. The DFT® GLC® check valve has the advantage of minimum pressure loss with silent, non-slam operation.

• "Short" Face-To-Face Dimensions
• Meets API 6D
• API 6D and API 6FA Fire Test
• ASME Class 150 and 300
• 2" to 24"
• Meets API 6D
• Standard Body Materials:
• A216 Grade WCB Carbon Steel
• A351 CF8M Stainless Steel
• ASME Class 150 to 2500
• 1" to 42" Line Size
• 316 SS Trim
• RF Flanged Ends
• MSS-SP61 Seat Leakage
• One-Piece Body
• Spring-Assisted Silent Closing, Non-Slam
• Center-Guided
• Dual-Guided Stem
• Horizontal or Vertical Installation

The DFT® Model PDC® Silent Check Valve is specially designed for use on the discharge side of reciprocating air or gas compressors. It includes a pulse damping chamber to maintain the disc in the open position during the momentary reductions in flow associated with each cycle of a reciprocating compressor and to protect against premature seat wear.

 

Standard Features:

• 2" to 26" Line Size
• ASME Class 150 to 1500
• Standard Body Materials:
• Carbon steel
• Stainless steel
• Stainless Steel Trim
• Stainless Steel Spring
• Ends available in RF Flanged & RTJ
• Pulse-Damped Design
• Horizontal or Vertical Installation
• Center Guided Trim
• Meets API 6D
• ASME B16.10 Face-to-Face Dimensions
• One-Piece Body

DFT’s Cast Iron GLC® Check Valve offers minimum pressure loss performance along with silent operation. This non-slam valve is center-guided, spring-assisted, and is capable of handling a wide range of temperature/pressure combinations along with a variety of system fluids. Each valve is constructed with a body, seat, spring, disc with stem and guide bushing, and specific models are available with O-ring or gasket body seals.

As its name implies, cast iron is the material used to create the body of the GLC® Silent Check Valve, and either bronze or 316 stainless steel is available for the trim. The valve is made with a one-piece body and “short” face-to-face dimensions. Depending on the application, both horizontal and vertical installation is possible. Not recommended for gas or steam service.