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A check valve, also known as a one-way valve, non-return valve, or reflux valve, is a mechanical device used in piping systems to allow fluid or gas to flow in one direction only. It’s designed to automatically prevent reverse flow or backflow, ensuring that the flow only goes in the desired direction and preventing contamination, mixing, or damage to equipment.
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A check valve, also known as a one-way valve, non-return valve, or reflux valve, is a mechanical device used in piping systems to allow fluid or gas to flow in one direction only. It’s designed to automatically prevent reverse flow or backflow, ensuring that the flow only goes in the desired direction and preventing contamination, mixing, or damage to equipment.
| Weight | N/A |
|---|---|
| Type | Stainless steel body with FKM Seals. Inlet M 14 x 1.5mm. Outlet NPT ¼” M, Stainless steel body with Viton Seals. Inlet NPT ¼” F. Outlet NPT ¼” M, Stainless steel body with FKM Seals. 6mm. Outlet NPT ¼” M, Stainless steel body with EPDM Seals. 6mm. Outlet NPT ¼” M |
Check Valve
A check valve, also known as a one-way valve, non-return valve, or reflux valve, is a mechanical device used in piping systems to allow fluid or gas to flow in one direction only. It’s designed to automatically prevent reverse flow or backflow, ensuring that the flow only goes in the desired direction and preventing contamination, mixing, or damage to equipment.
Check valves come in various designs and configurations, but they all share the common feature of allowing flow in one direction while blocking flow in the opposite direction. Here’s how a basic check valve works:
Flow Direction: When fluid or gas flows in the desired direction (usually from the inlet side to the outlet side), the pressure of the fluid opens the check valve. This is often achieved by pushing against a flap, a hinged disc, or some other mechanism within the valve.
Opening: As the fluid pressure on the inlet side increases, it overcomes the force of the valve mechanism (such as a spring) that holds the valve closed. This allows the valve to open and the fluid to pass through.
Closure: When the flow stops or starts to reverse, the pressure on the outlet side decreases. The valve mechanism, which may include a spring or gravity, then closes the valve to prevent backflow.
Check valves are commonly used in various applications, including:
– Plumbing systems: To prevent water or sewage from flowing backward into supply lines.
– Pump systems: To prevent reverse flow when the pump is turned off.
– Compressed air systems: To ensure air flows in the correct direction and avoid damaging equipment.
– Steam systems: To prevent steam from flowing back into equipment that could be damaged by condensation.
– Hydraulic systems: To maintain the direction of fluid flow and prevent damage to hydraulic components.
The design of check valves can vary, including swing check valves, ball check valves, diaphragm check valves, and more. Choosing the appropriate type of check valve depends on factors such as the flow rate, pressure, fluid type, and system requirements.
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