Short Description
A gate valve is a type of valve that uses a gate or wedge-shaped disc to start or stop the flow of fluid in a pipeline.
The gate moves vertically up or down to open or close the passage. When fully open, gate valves offer very low flow resistance, making them ideal for on/off applications but not recommended for throttling. They are commonly used in water supply, oil & gas, and power plant systems.
Key Features
- Designed for full open or full close service (not for throttling)
- Provides minimal pressure drop when fully opened
- Bi-directional sealing capability
- Available in rising stem and non-rising stem designs
- Suitable for high-pressure and high-temperature applications
- Long service life with proper maintenance
- Wide range of materials and sizes available
- Can be manually operated or automated with actuators
Material Components
- Body : Cast Iron, Ductile Iron, Carbon Steel, Stainless Steel, Alloy Steel
- Gate / Wedge : Stainless Steel, Cast Steel, Bronze, Hard-faced Alloy
- Seat Ring : Stainless Steel, Bronze, Stellite (hard-faced)
- Stem : Stainless Steel, Alloy Steel
- Bonnet : Cast Iron, Carbon Steel, Stainless Steel
- Packing : PTFE, Graphite, or other sealing materials
Handwheel / Actuator : Cast Iron, Steel, Pneumatic or Electric actuator
Specifications
- Size Range : 2” – 72” (DN50 – DN1800)
- Pressure Rating : Class 150 – Class 2500 (PN10 – PN420)
- Temperature Range : -29°C to +600°C (depending on material)
- End Connections : Flanged, Butt Weld, Socket Weld, Threaded
- Design Types :
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- Solid Wedge Gate Valve
- Flexible Wedge Gate Valve
- Split Wedge Gate Valve
- Rising Stem / Non-Rising Stem
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- Operation : Manual Handwheel, Gearbox, Pneumatic Actuator, Electric Actuator
- Standards :
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- Design: API 600 / API 602 / API 603 / ASME B16.34
- Testing: API 598 / ISO 5208
- Flange Standard: ASME B16.5 / EN 1092