A gate valve is primarily used for full-flow isolation, with the gate moving perpendicular to the pipeline flow to open or close the passage. When fully open, the gate is lifted clear of the flow path, helping reduce pressure loss. Speciality Valve manufactures gate valves for water, steam, oil, gas and industrial process services. Its focus on robust construction, reliable shut-off and long-term service performance supports demanding applications served by a Gate Valve Manufacturer in India. The gate valve works through the operation of a gate or wedge that moves linearly and lies perpendicular to the pipe line. The opening of the valve is done by rotating the hand wheel/actuator. In the process, the gate moves away from the flow passage. In a gate valve, there is minimal pressure loss because there are no obstructions to the flow passage in an open position. The valve is suitable for applications requiring either full open or full closed position. Double Disc Gate Valve: Uses two parallel discs that expand against the seats for effective isolation. Forged Steel Gate Valve: Provides compact containment of pressure in high-pressure and high-temperature pipelines. Non Rising Stem Gate Valve: Maintains the stem at a constant exterior position; hence, it is ideal for restricted spaces and underground piping. Pressure Seal Gate Valve: Uses system pressure to strengthen the bonnet seal in high-pressure steam and power applications. Rising Stem Gate Valve: Moves the stem upward during opening, providing visual position indication. Available sizes, ratings, materials, and connections vary according to construction and the approved project datasheet. In a rising stem gate valve, the stem moves upwards when the valve is opened. The valve position is visible to the operator, and the stem threads are always above the process fluid because of the outside-screw-and-yoke design. In a non-rising stem gate valve, the stem rotates without raising its height externally. It takes up less vertical space than a rising stem valve but lacks the ability to show position directly. Body material must suit pressure, temperature, corrosion, and piping compatibility. Carbon steel suits many hydrocarbon and steam systems, while duplex, and alloy grades support corrosive services. Seats may be integral, renewable, resilient, or metal seated. Bolted bonnets suit standard duties, while pressure-seal bonnets use internal pressure to improve sealing. Stem packing, gaskets, hard-facing, and trim selection influence torque, leakage, and service life. Oil and gas production and transmission Refinery and petrochemical process units Power plants and high-pressure steam lines Water treatment and distribution networks Chemical and fertilizer facilities Steel, cement, and mining plants Marine and offshore piping Fire-water and industrial utility systems API 600 applies to the bolton-bonnet steel gate valve, API 602 refers to the compact forged steel type, while API 603 pertains to the corrosion resistant bolton bonnet gate valve. The ASME B16.34 is for pressure temperature rating, material, design, tests, and marking. Inspection may involve material check, dimension check, shell pressure test, closure test, back seat test, functional test, and marking test. Selection begins with the medium, size, pressure, temperature, end connection, installation space, shut-off capability, and actuation type. Users need to verify wedge design, stem configuration, bonnet design, seating material, trim, leakage rating, standardization, and documentation. Provide these specifications to Speciality Valve for a data sheet and quote.Gate Valve Manufacturer in India
How Does a Gate Valve Work for Full-Flow Isolation?
Gate Valve Product Range for Industrial Service:
Gate Valve Design and Performance Specifications:
Rising Stem vs Non-Rising Stem Gate Valve:
Gate Valve Materials, Seats and Bonnet Designs:
Gate Valve Applications in India:
API Standards and Testing for Gate Valve:
How Do You Choose the Right Gate Valve?
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Gate Valve
Gate Valve Manufacturer in India delivering durable isolation valves for oil, gas, water and industrial piping.
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