Gate Valve

About Gate Valve
This valve has inside a gate that moves up-down perpendicular to the flow of the service. In the up position it will open and vise versa in the down position it will be closed. The flow is straight through, and does not lend itself for use as a metering valve.

The Gate valve is also available different types of Disc-Gate such as Double Disc Gate, Solid Gate, Flexible Gate, Parallel Slide Gate, Conduit Gate etc. to suit industrial various applications.

The gate valve is used mainly as an on /off valve. This Gate Valve is also called as a Bi Directional Gate Valve.

Mostly API 600/603 standard Gate valve contructions are bolted bonnet with rising spindle Pressure seal design bonnet design used for high pressure application from class 900 pressure rating.

Rising Stem
Outside Screw & Yoke (OS & Y) design keeps the stem threads outside the valve and is recommended where high temperatures, corrosives, and solids in the line might damage the stem threads inside the valve. When Gate Valve will open, the stem extends above the hand wheel indicates the position of the gate.

Valve Trim
A trim means internal working parts of valves. In Gate Valves the Stem (Spindle), Seat Ring, Back Seat Bush, Gland Bush is trim.

Integral Seat
These types’ seats are integral with body casting. Machined into the body casting.

Renewable Seat
Separate Seat Rings that screw into the valve body, which is called as Renewable Seats.

• Extended Bonnet design for low temperature and cryogenic services.
• Gland Seal Design (Water Seal) With Lantern Ring for Vacuum Application
• Non-Rising Hand Wheel on special request
• Bolted Bonnet / Pressure Seal Bonnet
• Flexible / Solid Wedge / Double Disc Type
• Gear / Pneumatic Cylinder / Electrical Actuator Operated
• Locking Arrangement
• By Pass Execution
• With NACE MR 0175
• Duplex Steel (D2205)/Alloy 20/Hast Alloy/Inconel Material Gate Valves
• Valve Position Indicator, Limit Switch
• Stem Protection
• Tailor Made Valve

Salient Features of Gate Valve

• Body & Bonnet made from high quality casting with liberal sections. The castings are precision machined for high performance
• Body Guided Wedge ensures positive seating and eliminates side thrust.
• Streamline flow path hence no pressure drop
• Leak Tightness at High & Low differential pressure
• Die moulded Graphite (Grafoil) Packing Rings, controlled clearance between stem, gland and bonnet bushing for guaranteed low emissions and also suitable for higher temperature.
• Deep stuffing box is providing for tightness and maximum long packing life.
• Swinging Eye Bolts facilitate easy access to the stuffing box.
• Back seating feature facilitates repacking of the stuffing box on line with the valve in fully open position.
• Seat Ring Screwed in to the body are replaceable type. Seal welded type Seat Ring & Integral Seat cab also be offered on special request.
• Stellited Wedge (Gate), Seat Ring & Back Seat can also be offered on special request.
• Higher Pressure & Higher Size Valves are provided with Thrust Bearings and also with Gear drive arrangements.
• In built wear life for long duration of service.