Check Valves Video

Check valves are used to prevent medium backflow by automatically opening and closing of the discs. Check valves are mainly used in one-way pipelines, allowing only one direction of media flow to prevent accidents.

Check valves can be divided into four types according to the movement mode of the disc: Swing Check Valve, Lift Check Valve, Nozzle Check Valve, Dual Plate Check Valve

  • Swing Check Valve H44
    Swing Check Valve H44 Swing Check Valve H44
  • Pressure Seal Check Valve H44
    Pressure Seal Check Valve H44 Pressure Seal Check Valve H44
  • Dual Plate check valve H76
    Dual Plate check valve H76 Dual Plate check valve H76
  • Nozzle Check Valve GLH41
    Nozzle Check Valve GLH41 Nozzle Check Valve GLH41
  • Design Features
    • Lift check, swing check, dual plate
    • Full bore or reduced bore
    • Bolted bonnet or self-sealing bonnet
    • Replaceable seat or integral seat
    • Conical disc and flat faced disc
  • Specification

    Design standard: API, ASME, EN, ISO, JIS, DIN, BS, GB
    Pressure rating: CLASS 150LB~2500LB, 1.0MPa~42.0MPa, JIS 10K~40K
    Size range: NPS1/2” ~60”, DN15~DN1500
    Standard connections: flange, wafer, threaded, butt weld, socket weld

Samples
    1. samples

    2. Pressure: 150LB
      Size: 1-1/2”
      Material: 904L
      Standard connection: Flange RF
      Applications: smelting

    1. samples

    2. Pressure: 150LB
      Size: 4”
      Material: titanium Gr.2
      Standard connection: Wafer
      Applications: terephthalic acid PTA

    1. samples

    2. Pressure: 150LB
      Size: 4”
      Material: CW6M
      Standard connection: Flange RF
      Applications: acetic acid transportation, alkylate

    1. samples

    2. Pressure: 600LB
      Size: 1/2”
      Material: Zirconium 705
      Standard connection: Flange RF
      Applications: acetic acid transportation

    1. samples

    2. Pressure: 900LB
      Size: 4”
      Material: CW12MW
      Standard connection: Flange RTJ
      Applications: cyclohexanone and caprolactam transportation

    1. samples

    2. Pressure: 150LB
      Size: 12”
      Material: duplex stainless steel 4A
      Standard connection: Wafer
      Applications: seawater desalination

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Weidouli Valves Co., Ltd.
Add.: No.20, Xingyu Road, Airport Industrial Zone, Wenzhou City, Zhejiang Province
Email: sale2019@weidouli.com
Contact: Gerald Xia
Tel.: 0086-577-86921659
Fax.: 0086-577-86926789
Website: www.wsv-valve.com

Weidouli Valves Co., Ltd.