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Solenoid vs Check Valve – What’s the Difference

Solenoid vs Check Valve

When it comes to plumbing projects, many different valves do different jobs. Two of the most commonly used valves are solenoid valves and check valves. These valves have unique features and benefits, so it is essential to know what they are and how they work. In this blog post, we will break down the differences between solenoid valves and check valves so that you can make an informed decision when selecting a valve for your next project.

Solenoid Valve

Solenoid valves are electromechanical devices that use electrical energy to open or close a valve to control the flow of liquids or gases. These valves require an external power source, such as an electrical current or battery. They are typically used in applications where precise control over the flow rate is required, such as controlling water pressure in sprinkler systems or regulating fluid levels in medical equipment.

Check Valve

On the other hand, check valves are mechanical devices that only allow liquids or gases to flow in one direction. They are typically used when you want to prevent backflow into a system. For example, they may be installed on pumps or water tanks to keep water from flowing back into the system after it has already been pumped out. Unlike solenoid valves, check valves require no external power source; they rely on gravity or pressure differential to automatically open and close the valve.

Difference Between Solenoid and Check Valve

  • A solenoid valve is an electromechanically operated valve.
  • A check valve is a mechanical valve that allows flow in only one direction.
  • Solenoid valves are more expensive than check valves.
  • Check valves are less likely to fail than solenoid valves.
  • Solenoid valves can be used for both liquids and gases, while check valves are only suitable for liquids.


As you can see, some key differences between solenoid and check valves must be considered when choosing a valve for your project. The type of valve you choose will depend on your specific needs, whether it is precise control over the flow rate with a solenoid valve or preventing backflow with a check valve. Knowing these differences can help you select the right valve for your job!

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