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

Inventory

Inventory

0

Specifications

Series

GLC®

Size

3.00 inDN 80

Cold Working Pressure

3705 psig255.65 barg

Working Steam Pressure

2665 psig

ASME CLASS

1500

Dimension A

9.88 in251 mm

Dimension B

10.50 in267 mm

Weight

110 lb49.9 kg

Cracking Pressure CP

0.052 psig0.004 bar

Trim Material

316 SS

Disc

316 SS

ENDS

Flanged (RF)

Cv

114

Other

API 6D API 6FD (ASME CLASS 150/300, 2" to 24" Only) API PED (Except Cast Iron)

Temperature Rating

-20 to 700 ºF

Materials of Construction

Body

A216 Grade WCB

Body Material

Carbon Steel
Seat1 316 SS
Spring2 Inconel® X-750

Bushing

316 SS
Gasketing3 Spiral Wound Graphite

Available Soft Seat Materials

Available Soft Seat Materials4 Buna-N (-70 to 250ºF) EPDM (-75 to 300ºF) TFE®-Viton® (-40 to 400ºF) Viton® (-40 to 400ºF) Zelon® (37 to 470ºF)

Codes and Standards

ANSI

B16.20 B16.34 B16.5
MSS5 SP-125 (CAST IRON VALVES ONLY) SP-126 (EXCEPT CAST IRON VALVES) SP-25 SP-6 SP-61 (CLASS 125 & 250 CAST IRON VALVES)
ASTM6 A126 CLASS B A216GR WCB A351GR CF8M

Features

N/A

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

Options

N/A

  • Inconel® X-750 Spring
  • Soft Seat (For Bubble-Tight Shutoff)
  • Custom Sizing Low Flow
  • Body Materials
    • Alloy 20, Duplex SS, Hastelloy®, Monel, Nickel-Aluminum Bronze
  • Severe Service Trim
  • Stellited trim (600 ºF+)
  • RTJ Ends
  • NACE

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 CFG Corrugated flexible graphite (316 graphite material) (Class 150 & 300), 316 SS/Graphite Spiral Wound (Class 600 & up).
  • 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. API 6D, API 6FA: ASME 150 & 300, 2" to 24" only.
    2. Contact DFT for NACE.