Find My Check Valve
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.
Unit of Measure
Items
Excalibur® Flanged Check Valves

A216 WCB 2" 316 SS Trim Class 600 RF Excalibur® Flanged Check Valve

Excalibur® Flanged Check Valves

A351 CF8M 2" 316 SS Trim Class 300 RF Excalibur® Flanged Check Valve

Excalibur® Flanged Check Valves

A216 WCB 2" 316 SS Trim Class 300 RF Excalibur® Flanged Check Valve

Excalibur® Flanged Check Valves

A351 CF8M 2" 316 SS Trim Class 900 RF Excalibur® Flanged Check Valve

Excalibur® Flanged Check Valves

A216 WCB 2" 316 SS Trim Class 1500 RF Excalibur® Flanged Check Valve
Series N/A Excalibur®
ASME CLASS N/A 600 N/A 300 N/A 300 N/A 900 N/A 1500
Size N/A 2.00 inDN 50
Dimension A N/A 11.50 in292 mm N/A 10.50 in267 mm N/A 10.50 in267 mm N/A 14.50 in368 mm N/A 14.50 in368 mm
Dimension B N/A 6.50 in165 mm N/A 6.50 in165 mm N/A 6.50 in165 mm N/A 8.50 in216 mm N/A 8.50 in216 mm
Weight N/A 35 lb15.9 kg N/A 29 lb13.2 kg N/A 29 lb13.2 kg N/A 81 lb36.7 kg N/A 81 lb36.7 kg
Cracking Pressure CP N/A 0.044 bar0.64 psig N/A 0.044 bar0.64 psig N/A 0.044 bar0.64 psig N/A 0.059 bar0.85 psig N/A 0.059 bar0.85 psig
Body N/A A216 Grade WCB N/A A351 CF8M N/A A216 Grade WCB N/A A351 CF8M N/A A216 Grade WCB
Body Material N/A Carbon Steel N/A Stainless Steel N/A Carbon Steel N/A Stainless Steel N/A Carbon Steel
Disc/Stem Assembly N/A A351 CF8M/A479 316
Seat1 N/A A351 CF8M
Spring2 N/A A313 316
Bushing N/A A479 316
Bolting3 N/A A193-B7 (Stud) & A194-2H (Nut)
Gasketing4 N/A 316 Spiral wound with Flexible Graphite Filler N/A CFG N/A CFG N/A 316 Spiral wound with Flexible Graphite Filler N/A 316 Spiral wound with Flexible Graphite Filler
Trim N/A A351 CF8M/316 SS
Available Soft Seat Materials5 N/A Buna-N (-70 to 250°F) EPDM (-75 to 300°F) TFE®-Viton® (-40 to 400°F) Viton® (-40 to 400°F) Zelon® (37 to 470°F)
ENDS6 N/A FLG (RF)
ANSI N/A B16.10 B16.20 B16.25 B16.34 B16.5
MSS N/A SP-126 SP-25 SP-6 SP-61
ASTM7 N/A A216GR WCB A351GR CF8M
Cv N/A 65 N/A 65 N/A 65 N/A 51 N/A 51
Applications N/A Autoclaves Boiler Feed & Discharge Chemical Lines Compressor Discharge Condensate Lines Cookers Cooling Towers Crude & Refined Product Lines Cryogenics Digester Evaporators Fly Ash System Generator Inlet & Discharge Hydraulic Lines Metering Pumps Mine Dewatering Nitrogen Purge Process Lines Pump Discharge Refrigeration Steam Lines Vacuum Breaker Water Lines Water Treatment
  • 1 Soft seats are available for bubble-tight shutoff.
  • 2 Inconel® 750 spring is available.
  • 3 Contact DFT for stainless steel or other bolting materials.
  • 4 Contact DFT for other gasket materials.
    CFG - 316 graphite material.
  • 5 TFE-Viton : Teflon Encapsulated Viton
  • 6 Consult DFT for availability
  • 7 Contact DFT for NACE.