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The FBC™ is a compact, lightweight, insert wafer check valve that easily installs between two flanges. The in-line, spring assisted design prevents "water hammer" and "reverse flow". The FBC™ contains all of the proven features of the Basic-Check® valve developed by DFT® over 60 years ago. Like the Basic-Check®, the metal-to-metal sealing area of the disc and seat is precision lapped providing tight shut-off for applications involving liquids, gases or steam. Resilient soft seats are available for applications requiring bubble-tight shut-off.
Unit of Measure

Specifications

Series

 N/A FBC™

ASME CLASS

 N/A 150 300

Size

 N/A 2.00 inDN 50

Dimension A

 N/A 1.216 in31 mm

Dimension B

 N/A 0.25 in6 mm

O.D.

 N/A 3.62 in92 mm

Weight

 N/A 0.9 lb0.4 kg

Cracking Pressure CP

 N/A 0.026 bar0.38 psig
Temperature Rating1
N/A -425 to 450 ºF-254 to 232 ºC

Cv

 N/A 23.1

Materials of Construction

Seat

 N/A 316 SS/TFE®-Viton®

Disc

 N/A 316 SS

Guard

 N/A 316 SS

Spring

 N/A 316 SS

Retaining Ring

 N/A 316 SS

Available Soft Seat Materials

Available Soft Seat Materials2 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 400°F)

Codes and Standards

MSS

 N/A SP-25 SP-6 SP-61

Application

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 Gases Generator Inlet & Discharge Hydraulic Lines Liquids Metering Pumps Mine Dewatering Nitrogen Purge Process Lines Pump Discharge Refrigeration Steam Steam Lines Vacuum Breaker Water Lines Water Treatment

Features

N/A

  • Spring-assisted silent closing
  • Horizontal or vertical installations
  • Sizes 1" thru 4"
  • ASME/ANSI Class 150 and 300
  • Stainless steel seat, disc, guard, retaining ring & spring
  • Cracking pressure: 0.6 to 0.15 psi
  • Temperatures to 450°F
  • Use in Schedule 40 pipe
  • Meets ASME B16.34-2004 & MSS SP-126
  • Flange Finish per MSS SP-6
  • Seat Leakage per MSS SP-61

Options

Options

 N/A
  • Soft-seat
  • Inconel® X-750 Spring

Inventory

Inventory

 N/A {0}
  • 1 Pressure/Temperature ratings in accordance with ASME/ANSI B16.34-2004
  • 2 Buna-N and Viton are not suitable for steam service