Hf-Valves

Tag: check valve

  • Forged Steel Check Valve

    Forged Steel Check Valve

    Product

    Forged Steel Check Valve


    Forged steel check valve is designed to prevent reverse flow in high-pressure industrial pipeline systems. With excellent pressure resistance, reliable sealing performance, and durable construction, they are widely used in oil and gas, petrochemical, chemical processing, and power generation applications.

    Specification

     

    Size: NPS 1/2″ ~ NPS2″

    Pressure: 150LB~2500LB

    Connection: RF, SW, BW, RTJ

    Temperature: -29°C ~ 550°C

    Main material: carbon steel, stainless steel, alloy steel

    Medium: water, steam oil, nitric acid, acetic acid, etc

    Applications: Suitable for tap water, food, pharmaceutical, electric petroleum, liquefied gas, steam, and other media pipelines

    Main Parts Material:

    Part

    A105N

     F22

     F304(L)

     F316(L)

    Body

    A105N

    A182 F22

    A182 F304(L)

    A182 F316(L)

    Disc

    A276 420

    A276 F22

    A276 304(L)

    A276 F316(L)

    Stem

    A182 F6a

    A182

    A182 F304(L)

    A182 F316(L)

    Gasket

    316+Flexible graphite

    316+PTFE

    Bonnet

    A105N

    A182 F22

    A182/F304(L)

    A182/F316(L)

    Features:

    1. Design and manufacture according to API standards, reliable sealing, excellent performance.
    2. 600Lb above gate and seat overlaiedwith sellite, wear resistance, high temperature resistance, corrosion resistance,
    3. The valve stem is tempered and surface nitrided, and has good corrosion resistance and scratch resistance.
    4. It adopts wedge elastic gate structure, and sets rolling bearings with medium and large diameter, which is easy to open and close.
    5. 1500LB, 2500LB middle cavity adopts pressure self-tightening sealing structure
    6. The inverted seal is made of stainless steel threaded connection sealing seat or body overlay welding austenitic stainless steel, the seal is tight, and the packing replacement and maintenance can be carried out without stopping, which is convenient and fast and does not affect the operation of the system
  • Lug Type Double Plate Check Valve

    Lug Type Double Plate Check Valve

    Product

    Lug Type Double Plate Check Valve

    Specification

    Size: NPS8~60″ (DN200~1500mm)

    Pressure: Class150~900Lb

    Main Material: WCB、A105、 C5、WC6、WC9

    Design and manufacturing standards: API594, API 6D, ASME B16.34

    Structure length: API 594, API 6D, ASME B16.10

    Connections: ASME B16.5, ASME B16.47

    Test standards: API 598, API 6D

    Main Parts Material:

    ErPart

    Material

    Body

    WCB、304、316、316L

    O ring

    NBR、VITON

    Disc

    304、316、316L

    Gland

    304、316、316L

    Shaft

    304、316、316L

    Features:

    1. The structure length is short, which brings great convenience to the valve installation, handling, storage and pipeline layout, and can save costs.
    2. Reduce line vibration, in order to reduce line vibration to a minimum or eliminate line vibration, the check valve must be closed as soon as possible before the liquid flow has a chance to reverse flow. The size of each flap in a double-lobe check valve Only half the size of a fully constructed check disc, it experiences reduced fluid resistance and faster movement to the closed position. They have a radius of rotation half that of conventional check valves.
      Its leading distance from the open to the closed position is halved, thus reducing travel time by up to 50%
    3. The double-piece check valve reduces water hammer, and the flaps of the double-piece check valve have been greatly reduced in weight, which can reduce the slamming and water hammer phenomena to a small limit Degree.