The feature of Gate Valve

Features of a Gate Valve:

A gate valve is a type of valve used to control the flow of liquids and gases. It operates by lifting a gate (a rectangular or round wedge) out of the path of the fluid. Here are its main features:

Key Features:

On/Off Control (Not for Throttling):

Gate valves are designed primarily for fully open or fully closed positions. They are not ideal for flow regulation, as partially open gates can cause vibration and damage.

Low Pressure Drop:

When fully open, the gate valve offers very low resistance to flow, resulting in minimal pressure drop.

Bidirectional:

Can be used in both directions of flow, making them versatile in piping systems.

Rising or Non-Rising Stem:

Rising Stem: Stem visibly moves up when opened (provides visual position indication).

Non-Rising Stem: Stem stays in place; only the gate moves (suitable for limited space).

Various Gate Designs:

Solid Wedge

Flexible Wedge

Split Wedge

Each is suited for different pressure/temperature conditions.

Tight Sealing:

Provides good sealing when fully closed, ideal for isolating sections of a pipeline.

Wide Range of Sizes & Materials:

Available in many sizes and materials (cast iron, stainless steel, brass, etc.) for compatibility with various fluids and temperatures.

Slow Operation:

Takes multiple turns of the handle or actuator to open/close, making it less suited for quick shutoff.

Manual or Actuated Options:

Can be operated manually (handwheel) or automatically via electric, pneumatic, or hydraulic actuators.

Common Applications:

Water and wastewater, oil and gas, power generation, and chemical industries.

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