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Spring-assisted, Center Guided, Inline Check Valve

Product Announcement from DFT Inc.

Spring-assisted, Center Guided, Inline Check Valve-Image

The DFT® Excalibur Silent Check Valve is a spring-assisted, center guided, non-slam 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 dual guided 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.

 Valve Features:

• Axial flow

• Nozzle style

• ASME B16.10 Face-to-Face dimensions

• Spring-assisted silent closing, non-slam

• 2” to 24” Line size

• ASME 150 to 1500 (See chart)

• Standard body materials:

- A216 Grade WCB carbon steel

- A351 CF8M stainless steel

• Optional body materials:

- Alloy 20

- Duplex SS

- Hastelloy®

- Inconel® 600

- Monel®

- Nickel-Aluminum Bronze (NAB)

• Standard ends:

- RF Flanged

• Optional ends (4):

- Butt weld

- Flanged x Butt weld


- Victaulic®

• Stainless steel trim

• Center-guided

• Dual-guided stem

• Horizontal or vertical installation

• Tight shutoff

• Two-piece body

• Protected spring

• Easy maintenance

• Versatile

• Options:

- Soft seat

- Inconel® X-750 Spring

- Custom sizing low flow

- Severe service trim

- Stellited trim (600°F+)


For a detailed product pdf - click here

Contact us:


About DFT Inc.

DFT provides cost effective application engineering assistance, rapid prototyping and fast-turn initial production. Our staff responds quickly and our systems are designed to deliver reliably within our ISO9001-2000 quality management system. For more than 65 years DFT has solved check valve problems, prevented check valve failure and water hammer and solved severe service control valve problems.

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