Find My Check Valve
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.
Unit of Measure

OLD NPT #

OLD PART #

N/A 9575-2

Specifications

Series

N/A GLC®

ASME CLASS

N/A 150

Size

N/A 2.00 inDN 50

Dimension A

N/A 6.25 in159 mm

Dimension B

N/A 6.00 in152 mm

Weight

N/A 17 lb7.7 kg

Cracking Pressure CP

N/A 0.02 bar0.29 psig

ENDS

N/A FLG (RF)

Cv

N/A 63

Materials of Construction

Body

N/A A216 Grade WCB

Body Material

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
Gasketing3 N/A Corrugated Flexible Graphite

Available Soft Seat Materials

Available Soft Seat Materials4 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

ANSI

N/A B16.20 B16.34 B16.5
MSS5 N/A SP-125 SP-126 SP-25 SP-6 SP-61
ASTM6 N/A 6FD A126 CLASS B A216GR WCB A351GR CF8M CRN NACE

Options

Options

N/A Alloy 20 Custom Sizing Digester Trim Hastelloy® Inconel® X-750 NACE RTJ Ends Soft Seat Stellited Trim X-750 Spring

N/A

  • Inconel® X-750 Spring
  • Soft seat
  • Custom sizing - low flow
  • Body Materials
    - Alloy 20, Hastelloy®, Monel
  • Digester trim
  • Stellited trim (600°F+)
  • RTJ Ends
  • NACE

Features

N/A

  • "Short" Face-to-Face dimensions
  • API 6FD Fire Test
    - ASME 150 and 300
    - 2" to 24"
  • One piece body
  • Spring-assisted silent closing, non-slam
  • Center guided
  • Dual guided stem
  • Horizontal or vertical installation
  • Protected spring
  • Easy maintenance
  • Versatile
  • ASME 150 To 2500
    - 1" to 24" Line size
    - WCB & SS Bodies
    - 316 SS trim
    - RF Flanged Ends
    - MSS-SP61 seat leakage
  • Axial flow
  • Nozzle style

Application

N/A Autoclaves Boiler Feed & Discharge Chemical Lines Condensate Lines Cookers Cooling Towers Crude & Refined Product Lines Cryogenics Digester Evaporators Fly Ash System Generator Inlet & Discharge Hydraulic Lines Metering Pumps Mine Dewatering Process Lines Pump Discharge Refrigeration Steam Lines Vacuum Breaker Water Lines Water Treatment

  • 1 Soft seats are available for bubble-tight shutoff.
  • 2 Inconel® X-750 spring is available.
  • 3 Corrugated flexible graphite (316 graphite material) unless noted elsewhere.
  • 4 TFE-Viton: Teflon Encapsulated Viton
  • 5
    1. SP-61: Class 125 and 250 Cast Iron valves are leak tested in accordance with AWWA.
    2. SP-125,SP-250: Cast Iron Valves only.
    3. SP-126: Except Cast Iron Valves.
  • 6
    1. 6FD: ASME 150 & 300, 2" to 24" only.
    2. Contact DFT for NACE.