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Here are some key types of industry valves:

Gate Valves: These valves control fluid flow by raising or lowering a gate-like obstruction. They are often used in applications where the valve is either fully open or fully closed, as they are not suitable for regulating flow.

Ball Valves: Ball valves use a rotating ball with a hole through it to control fluid flow. When the hole is aligned with the pipe, the valve is open; when it is perpendicular, the valve is closed. Ball valves offer quick and precise control over flow.

Butterfly Valves: These valves use a disc-shaped element that rotates at a right angle to the flow, either allowing or blocking passage. They are often used in larger pipelines and offer a good balance between flow control and pressure drop.

Check Valves: Also known as non-return valves, check valves allow fluid to flow in one direction only. They prevent backflow, which can occur when pressure in the system decreases.

Globe Valves: Globe valves have a globe-like structure and are used for fine control of flow. They have a movable disk that closes against the flow, allowing precise regulation of flow rates.

Needle Valves: Needle valves are designed for fine control of flow. They have a slender, tapered point at the end of the valve stem that fits into a matching seat. Turning the stem allows for precise adjustment of flow.

Plug Valves: Plug valves use a cylindrical or conical plug with a hole in it to control flow. They are often used for on/off applications and can handle thick or abrasive fluids.

Pressure Relief Valves: These valves automatically release pressure from a system when it exceeds a certain level. They are crucial for maintaining the safety and integrity of systems under high-pressure conditions.

Control Valves: Control valves are designed to regulate the flow rate or pressure of fluids in response to signals from a control system. They are used in processes that require precise control over variables like temperature, pressure, and flow rate.

Safety Valves: Safety valves are pressure relief valves specifically designed to release excess pressure in order to prevent equipment damage or catastrophic failures due to overpressure.

Diaphragm Valves: These valves use a flexible diaphragm to control flow. They are often used in applications that involve corrosive or abrasive fluids.
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