A Gate Valve is a linear motion valve primarily used to start or stop fluid flow in pipelines. It operates by lifting a gate or wedge out of the flow path, providing a full opening or closure. Gate valves are known for their robust construction, ensuring reliability in high-pressure and high-temperature applications. Typically used in systems requiring minimal flow restriction, they are ideal for on/off control, as they provide minimal pressure drop when fully open.
Gate valves are available in various materials, including stainless steel, carbon steel, and cast iron, making them versatile and suitable for use with water, oil, gas, and chemicals. These valves are widely used in industries where a tight shutoff and durability are essential, including oil and gas, water treatment, power generation, and chemical processing. Their simple design and ease of operation make them a popular choice for various industrial applications.
Gate Valve is trusted across various industries for its precision, durability, and reliability. Explore its wide-ranging applications below:
Gate valves are crucial in managing the flow of crude oil, natural gas, and refined products in pipelines and processing plants. They are widely used in both upstream (extraction) and downstream (refining and distribution) operations for reliable isolation and flow control.
Gate valves are essential in water distribution and treatment plants, providing isolation during system maintenance or repairs. They are installed in pipelines to efficiently manage water flow and ensure reliable system operation.
Gate valves are widely used in thermal and nuclear power plants, particularly in steam, feedwater, and cooling systems. They offer reliable isolation in high-pressure and high-temperature environments to ensure the smooth operation of power plants.
Gate valves play a vital role in controlling the flow of various chemicals and gases within pipelines in chemical and petrochemical plants. They are designed to prevent contamination and protect sensitive equipment.
Gate valves are used in pipelines managing raw pulp, chemicals, and water in the pulp and paper industry. They provide effective isolation during maintenance and operational control, ensuring smooth production processes.
In marine and offshore settings, gate valves are installed in ballast water systems, cargo lines, and fire protection systems on ships and offshore platforms. They help ensure safe and efficient operations in harsh marine environments.
Gate valves are used in various industrial manufacturing processes, including steel production, mining, and food processing, to handle a wide range of process fluids and provide reliable isolation and flow control.
Gate valves are commonly used in chilled water and condenser systems to ensure unidirectional flow. They help maintain system efficiency, protect pumps, and other components from damage, ensuring smooth operation in HVAC systems.
The open-close member of the gate valve is the wedge disc, the moving direction of which is perpendicular to that of the fluid. The gate valve can be fully opened or closed and can not work as regulation and throttle. The wedge disc holds two sealing faces and the most common mode is the two sealing faces form a wedge type, with the wedge angle varying from the parameters, usually as 50 and as 252' when the medium temperature is not high. When a hard-seal gate valve is closed, the sealing face can be sealed only with the medium pressure, that means pressing the sealing face of the wedge disc by means of the medium pressure onto the seat ring on the other side to ensure the sealing of it, just as the self-sealing.
While most of the gate valves are sealed in a forced way, i.e. when the valve is closed, the wedge disc is externally forced to be pressed onto the seat ring so as to ensure the tightness of the sealing face. This valve uses the compensating action from the micro- elastic deformation produced with the elastic wedge disc to get a good sealing effect and features light open-close, reliable sealing, good elastic memory and a long duration etc. notable advantages and can be used as a regulation and cutoff device for the pipeline in rap water, sewage, construction, petroleum, chemical, food, medicine, light-textile industry, electric power, ship, metallurgy, energy system etc. trades.
ADVANCED TECHNOLOGY cast steel valve are designed and manufactured to provide maximum service life and dependability. All gate valves are full ported and meet the design requirements of American Petroleum Institute Standard API 600 & API 6D, British Standard BS 1414 & BS EN 1984 and generally conform to American Society of Mechanical Engineers standard ASME B 16.34. Valves are available in a complete range of body/bonnet materials and trims.
Standard body/bonnet materials include of carbon steel, low and stainless steels. For special applications they can be supplied in other grades or alloy and stainless steel. There’s a full range of trim materials to match any service. Optional packing and gasket materials are available for a full range of service conditions.
Large handwheels for easy operation. Also available with gearing motor actuators, pneumatic or hydraulic actuators for more difficult services.
In services requiring frequent cycling or with high pressure/ temperature variations, live loading extends the service life between maintenance periods by requiring less frequent packing gland adjustments. Belleville spring are employed to provide constant packing gland stress.
Outside Screw and Yoke. Cast steel gate valve yoke integral with bonnet for 150Lb-8’, 600Lb-6’, 900-Lb-4’ & Small
Bolted bonnet. Welding bonnet and pressure seal bonnet in services requiring frequent cycling or with high pressure/temperature variations.
A choice of Flanged, RTJ flanged or Butt welding end for piping flexibility.
Furnished in aluminum bronze to reduce operating torque. Most sizes furnished with ball bearing yoke sleeves.
Lantern ring with leak-off fitting connection and double packing stack is optionally available for critical services.
A Male and Female joint or Tongue and Groove joint is used 150Lb to 600Lb valves, Ring joint is used in the body bonnet connection in 900Lb & higher rated valves.
Plug disc is stem guided on all sizes. Disc has a differential angle front the seat to provide a line contact for maximum sealing. The bottom of V-port disc is fuided by the body seat ring for maximum disc stability in throttling applications. The soft teflon ring is excellent for lower temperature service where tight shut off is required.
Separate heavy duty. full ported rings for easy maintenance. Screwed or welded connection into body.
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