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Gate Valves

Body and Bonnet

The body is constructed with uniform sections and generous radius fillets to prevent stress on all sides. The body has a straight through port without recess except between the seats to achieve minimum turbulence, erosion and resistance to flow. The bolted bonnet is Silted with a back seat ring to guide the stem and provide a back seat when the valve is fully open. The yoke is cast integrated with the bonnet. The body-bonnet joint for ASME Class 150 valves is oval in shape and plain faced. In ASME Class 300 and 600 valves, the bonnet joint is circular in shape and male-female type. Any kinds of gasket materials can be supplied according to customer's requirement

Wedge Design Disc

One piece flexible wedge ensures tight seating over a wide range of differential pressures and temperatures. Stress concentrations are minimized due to one piece flexible wedge of which the cross section of the wedge is a tapered “H” in shape. In addition, the flexible wedge adjusts the movement of body seat.

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Seat Ring

Seal welded seat rings are designed to achieve minimum pressure drop and prevent damage by corrosion. Leakage through the path between the seat rings and the body is also eliminated.

Seal tightness:

ANSI B16.104 V, VI optional.

Stem & Back Seat

The stem has the 'T' head engaging with the T-slot in the wedge. Its surface is precisely machined and ground to reduce friction to ensure perfect tightness. The stem also has a back seat shoulder to match with the back seat ring in the bonnet.

End Connections:

BW, SW or Flanges, RJ facing flanges for valve ≥CL600 are available on request.

Operation

All valves are offered with hand wheel, gear operator, or actuators(electric or pneumatic) according to customer's requirements.


Production Range

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Design Standards

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Parts And Materials. Class 600, 900, 1500 & 2500

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Gate Valve Dimensions and weight

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Technical Specifications Download