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Readers ask: What does an inline check valve do?

Inline check valves utilize a check mechanism that functions in the fluid line or media pathway of a process piping system. Oftentimes, these check valves are of a compact design allowing for space saving and/or ease of installation into an existing system.

What is the main purpose of a check valve?

Check valves are found in almost every industrial application acting as one-way or non-return valves. Check valves are simple devices, perform a vital function by preventing reverse flows, therefore preventing damage and ensuring efficient operations. For example, reverse flow can result in water hammer.

When should you use a check valve?

Check valves are used in many different applications. For example they are often placed on the outlet side of a pump, to protect the pump from backflow. Centrifugal pumps, the most common type of water pumps, are not self-priming, and therefore check valves are essential for keeping water in the pipes.

What is the difference between a check valve and a backflow preventer?

A backflow preventer is to be used in high hazard situations and is meant to fully protect the potable water with their fail safe design while a check valve is used in low hazard situations and prevents backward water flow but it does not have the same fail safe components.

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Does a check valve reduce water pressure?

Check valves are designed to prevent water flowing in one direction while moving somewhat freely in the other direction. In yet another style of check valve, water pressure compresses a spring-loaded disc in the fluid stream, pushing the disc back into the valve body and opening a path for the water to flow around it.

Does a check valve go before or after a pump?

The most common installation is at the pump. A check valve may be installed on the suction side of the pump to maintain the pump’s prime in the event of a pump shutdown. A check valve will be used commonly on the discharge of the pump to prevent backflow from the downstream system, when the pump shuts off.

Do I need a check valve and a foot valve?

We recommend using only one check valve or foot valve in a pump system. A foot valve should be at the inlet to the suction line of turbine, centrifugal, and jet pumps. If an additional check valve is required, it should be placed after the pressure tank to allow the pump and discharge pipe to remain pressurized.

What is the purpose of a check valve in a hydraulic system?

Check valves are the simplest form of hydraulic devices in that they permit free oil flow in one direction and block oil flow in the opposite direction. Check valves may also be used as a directional or pressure control in a hydraulic system.

Is a check valve necessary for a well pump?

A Check Valve Is Required For A Water Well. It’s important to understand the components that make up your homes water system in order to maintain it and keep clean fresh water flowing safely into your home.

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Where should a check valve be installed?

Check valve can be installed in horizontal or vertical piping runs, with the flow running upward. Mounting for vertical installations is critical.

Do I really need a backflow preventer?

Understand that it is always recommended to install a backflow preventer in any situation where incoming water and waste water have a chance of being cross-connected. This serves to protect you and your home, keeping your drinking, bathing, and cleaning water safe.

Why do I need a double check valve?

Double check valves protect the water supply from the risk of backflow and back siphonage in domestic homes and commercial buildings, ultimately preventing potential contaminants getting into other parts of the system, especially drinking water.

Can a bad check valve cause low water pressure?

If one of these valves is partially or fully turned off for some reason, it can cause your water pressure to decrease greatly. If you think a closed or partially closed valve may be the cause for your low water pressure, check both main valves to make sure they are fully open.

Can a check valve get clogged?

A preventer can provide years of service without any problem, but if either of the two check valves inside the device becomes clogged with debris or a mineral buildup, it spits water into an open-ended vertical pipe.

Can a check valve fail?

For example, failing check valves will start to vibrate and even lose some internal parts when problems begin to arise. Other symptoms of check valve failure include reverse flow and excessive component wear and damage. Check valves will also emit noises as they start to break down.

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