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The DFT® Model WLC Cast Iron Wafer style Silent Check Valve is a spring-assisted, in-line check valve that provides reliable, low maintenance service for a wide range of fluids and pressure/temperature combinations. This check valve is cast iron and face-to-face according to MSS-SP126. The joint between the seat ring and body is sealed by the flange gasket upon installation preventing any leakage through the joint when the valve is in service.

The WLC® Cast Iron Check Valve is ideally suited for applications in water treatment, power generation, and other industries, though not recommended for gas or steam service. It will help to eliminate water hammer caused by double-door style check valves.
Unit of Measure

Inventory

Inventory

 N/A {0}

Specifications

Series

 N/A WLC®

Size

 N/A 8.00 inDN 200

ASME CLASS

 N/A 250

Dimension A

 N/A 6.50 in165 mm

Dimension B

 N/A 13.38 in340 mm

Weight

 N/A 86 lb39 kg

Temperature Rating

 N/A 200 ºF Max 93 ºC Max

Pressure Rating

 N/A 400 psig0 barg27.6 barg

ENDS

 N/A Wafer (FF)

Cv

 N/A 900

Other

 N/A API 594 (600#, 900/1500#) API PED (EXCEPT CAST IRON VALVES)

Materials of Construction

Body1 N/A A126 Class B
Trim2 N/A 316 SS
Seat3 N/A A351 CF8M

Spring

 N/A A313 T302 Stainless Steel

Bushing

 N/A 316

Body Material

 N/A Cast Iron

Available Soft Seat Materials

Available Soft Seat Materials

 N/A Buna-N (-70 to 250ºF)

Features

N/A

  • Wafer design
  • Lightweight
  • Spring-assisted silent closing
  • Center guided (2" to 10")
  • Dual guided stem (2" to 10")
  • Horizontal or vertical installation
  • Protected spring
  • ASME 125 & 250
    - 2" to 10" Line Size
    - Cast Iron body
    - Bronze or 316 SS trim
    - Ends:
      - Wafer FF
    - AWWA seat leakage
  • Axial flow
  • Nozzle style

Options

N/A Buna-N Soft Seat

Application

N/A Chemical Lines Cooling Towers Crude & Refined Product Lines Evaporators Generator Inlet & Discharge Hydraulic Lines Metering Pumps Mine Dewatering Process Lines Pump Discharge Vacuum Breaker Water Lines Water Treatment

  • 1 Not recommended for gas or steam service.
  • 2 316 stainless steel trim recommended for temperatures from 180°F to 200°F.
  • 3 Buna-N soft seat available for bubble-tight shutoff.