Gate Valves

Gate valves, also referred to as slide or knife valves, are essential pneumatic shut-off valves utilised to regulate the flow of various media (such as liquids or gases) in pipelines. They are characterised by a gate or wedge-shaped disc that moves perpendicular to the flow pathway to either block or allow flow. These linear motion valves in which a plain closure component slides into the flow stream to provide shut-off. They are the most used type of valves that can be found in almost every setting. Additionally, Gate valves are built to reduce pressure drop at full opening and provide a complete closure to stop fluid flow. The liquid flow direction remains constant, and the diameter through which the process fluid passes is nearly identical to that of the pipe, resulting in minimal pressure drop when fully opened.

Working Principle of Gate Valves

The gate, which is the blocking element, is either raised or lowered by turning an actuator or handwheel. Gate valves are created to be fully open or closed. They are not suitable for throttling or managing flow because partial openings can cause erosion and damage to the gate and seats. When fully open, the gate is wholly out of the flow path, providing minimal resistance to flow and ensuring a very low-pressure drop across the valve.

Standout Features and Benefits of Using Our Best-in-Class Gate Valves

• Offers a tight seal when closed, preventing leakage.
• Offers minimal resistance to flow when fully open.
• Relatively simple and reliable design.
• Typically, less expensive than other types for similar applications.

Available Gate Valve Types

• Solid Wedge Gate Valves: The most common type features a solid wedge-shaped gate.
• Flexible Wedge Gate Valves: Its gate has slight flexibility to enhance sealing.
• Split Wedge Gate Valves: The gate is composed of two pieces that are forced against the seats for a tighter seal.
• Rising Stem Gate Valves: The stem increases as the valve is opened, showing the valve position.
• Non-rising Stem Gate Valves: The stem does not rise, making them perfect for applications with limited vertical space.

Versatile Uses of Gate Valves

• Water & Wastewater Treatment: Separating sections of pipelines for maintenance or repair purposes.
• Oil & Gas Industry: Managing flow in pipelines and refineries.
• Chemical Processing: Withstand the intensity of various chemicals and fluids.
• Power Plants: Isolating equipment for maintenance.

Overall

Gate valves are must-have components used in various industries for reliable shut-off and complete control of fluid flow. Their simple form factor, low-pressure drop, and positive shut-off make them an excellent option for myriad applications.