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Gate valve Class 300

Salient Feature

Gate Valves are largely designed to start or stop a flow when a straight line flow of fluid and minimum flow restriction are needed. In service, these gate valves are pretty much kept either fully open, or fully closed. Gate valves are primarily made up to start or stop a flow when a straight line flow of fluid and minimum flow restriction is

needed. In service, these Gate Valves are pretty much kept either fully open, or fully closed.

When turned open, the disc of the gate is completely removed allowing materials to pass. This gives the gate valve good shut-off property and allows it a bidirectional movement. They cannot be quickly blocked or unblocked. The Gate Valves shakes when it is blocked.

Technical description

The gate valve is an OS&Y full bore with flexible wedge and rising stem. The body and the bonnet are made of castings and are connected by a flanged joint. The seating surfaces of the seats and the wedge are made in compliance with API 600. The seat rings are welded into the body. The gate valves are equipped with a back seat. The gate valves are a bi-directional sealing valves. The body-bonnet joint and the packing chamber are sealed with asbestos-free gasket and packing which guarantee a long life service. The requirement for an automatic body cavity pressure relief shall be specified in the purchase order. Pressure relief can be achieved by:

  • Drilling a hole through one disc of the wedge,
  • Special valve incorporated into the wedge,
  • External bypass,
  • When turned open, the disc of the gate is completely removed allowing materials to pass. even though this gives the valve good shut-off property and bidirectional, they cannot be quickly open or close and are responsive to shaking when open.

    CS body construction providing liberal strength to meet most conditions Integral yoke & bonnet; Outside screw & yoke, bolted bonnet Single flexible wedge disc compensates for deformation of body due to pipe stresses Seal welded seat ring eliminates leak path behind rings and for long trouble-free service Available in flanged end connection; butt weld end also available 100% tested according to API 598

    Operation

    The gate valves are delivered with a hand wheel, a manual bevel Gear, an electric actuator or bare stem ready for connection to An actuator. The standard connecting dimensions for connection
    To a manual gear or an electric actuator meet the requirements of ISO 5210.

    Standards

    Design to ASME B16.34
    Face-to-Face/End-to-End: ASME B16.10
    Flange Dimensions: ASME B16.5
    Weld End: ASME B.16.25
    Basic Design: API 600

    Note

    For non-horizontal installation,
    Please ensure to consult with us separately,
    As special request must be generated to ensure proper function

    Specification:
    Design API, British standard API 600
    Material Cast Steel CS ASTM A 216 WCB, WC6, WC9, WC5, LCB, CF8, CF8M, CF3M .
    Disc & Seat CS SS304.304L, SS316, 316L,
    Trims F6 SS 304,304L, 316,316L, satellite HF etc.
    Action Hand Wheel and Gear Box
    Rating ASA 300,
    Ends conn.Flanged ends, Butt weld, B16.10, B16.25
    Size 2" To 24"
    Mfg. BS 1414, API 600
    Testing API 598, BS 6755
    Application Oil, Gas, Air, Water, Chemicals, Pharmaceuticals , Acid, Foods, Vacuum, Heat Treatment, Paper & Sugar Industries, Petroleum Industries, Edible oil industries