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A valve, or faucet, is a mechanical component that regulates flow. Depending on your demands, this might be water, oil, or gas. As a result, valves are classified into several categories based on their functions.
The valve, functioning as a flow regulator, possesses a mechanism that enables fluid or gas to flow through the pipe when it is open and halts flow when it is closed. This capability allows for adjusting volume and pressure in the system using valves, thus simplifying system maintenance and repairs.
Users can utilize valves in a variety of applications, including cooling systems, hydraulic systems, pneumatic systems, fuel systems, and many more. Various sorts of key components exist:
The valve body is the main part of valves, made of corrosion-resistant materials. It includes an inlet, outlet, and other components. Disc valves are used to open and close fluid flow, made of hard, wear-resistant materials like stainless steel, aluminum, or brass. The stem connects the valve disk to the handle, made of the same material as the valve body. Seat valves stop the valve disk when closed, made of strong, corrosion-resistant materials like stainless steel or brass. Valve springs ensure fluid flow direction, while valve handles regulate fluid flow. Packing valves prevent fluid flow leakage at the connection between the stem and valve body.
Types of Valves
Many different types of valves with varying sizes and shapes exist because various applications require the fluid control function. To make accessing information easier for you, here are some of the most regularly used valve types:
Ball: Commonly used as a faucet, quick opening valve, and can open and close completely with a quarter turn.
Butterfly: Regulates and controls low-pressure fluids, and can be fully opened or closed with a quarter turn.
Globe: More complex, regulated by changing flow direction, reliable for precise fluid opening and closing without leaks.
Gate: Only function to open or close the flow completely without regulating fluid flow. Not recommended for dynamic fluid flow needs.
Plug: Similar to gate valves, can only open or close the fluid flow completely. Usually applied to gas flow.
Traps: Traps remove condensate from steam pipes without wasting hot steam. Types include float trap, bucket trap, and inverted bucket trap..
Needle: Used for industrial purposes, functions as an instrument, gauge, and line service meter. Can be used for accurate throttling and at high pressures and temperatures.
Diaphragm: Delivers calm and constant fluid, good for flow control and tight flow closure, even with solid contaminants.
Check: Ensures flow goes in one direction or prevents backflow.
Pressure Relief Device: Prevents excessive pressure from occurring when fluid flows. Types include relief valves and pop valves for high-pressure applications.
Pressure-Reducing: Keeps pressure in the piping system constant by reducing pressure from a higher-pressure source.
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