Types of Check Valves: Swing Check Valves. Swing check valves feature a simple design complete with a disc attached to a hinge at the top. As fluid passes through, the valve remains open. When a reverse flow occurs, the changes in motion as well as gravity help to bring down the disc, effectively closing the valve. This article will explore the basics of check valves, how they work, what types there are, how to select and install them, how to solve their. Swing Check valve, Tilting disk check valve, wafer type check valve, disk check valve, piston check valve, ball type check valve, dual plate and.


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Valve Types & Configurations [Check Valves] | KITZ CORPORATION

Generally, stop-check valves are used in power plants and boiler systems. Ball Check Valves Unlike other valves, ball check valves use a spherical ball inside their bodies to help control the flow direction in pipes and systems.

This ball rotates freely when fluid passes through the system, type of check valve causes a wiping motion and even wear between the ball and seat. If pressure decreases or reverse flow is detected, the ball will move toward the seat.

  • Types of Check Valves & Their Recommended Applications | CPV Blog
  • Check valve
  • Types of Check Valves and Their Recommended Applications
  • Types of Check Valves: Swing Check Valves

This creates a seal and helps to maintain the appropriate direction of fluid type of check valve. Ball check valves are one of the most common valves available.

Swing check valves can be used for either horizontal or vertical fluid flowing upward pipe layouts. And have the cover in lieu of the bonnet.

Check valve - Wikipedia

Its lightweight and compact construction make it a preferable choice when space and convenience are important. Frequently used in systems that used butterfly valves. It can either be used as a check valve or as an isolation stop valve like a globe valve.

These valves can type of check valve closed with the help of a stem which is not connected to the valve disc during normal operation and make it possible to use type of check valve valves as a regular check valve.

However, when needed, the stem is used to holds the free-floating disc against the valve seat, just as a globe valve.

These valves are available in tee, wye, and angle pattern. Swing type and piston lift type check valves are commonly used as stop check valves.

Discharge line of rotary equipment such as pump and compressor always fitted with a check valve to prevent backflow. The only function of a Non-return valve is to prevent backflow. There is no better type of check valve.

What is a Check Valve? Learn about Check Valves Types and Parts

For example, a double check valve is often used as a backflow prevention device to keep potentially contaminated water from siphoning back into municipal water supply lines. Pumps[ edit ] The check valves on this steam locomotive are located under the small cover between the chimney and the main dome Check valves type of check valve often used with some types of pumps.

Piston-driven and diaphragm pumps such as metering pumps and pumps for chromatography commonly use inlet and outlet ball check valves. These valves often look like small cylinders attached to the pump head on the inlet and outlet lines. Many similar pump-like mechanisms for moving volumes of fluids around use check valves such as ball check valves.

The feed pumps or injectors which supply water to steam boilers are fitted with check valves to prevent back-flow. Check valves are also used in the pumps that supply water to water slides.

What is a Check Valve? Learn about Check Valves Types and Parts

The water to the slide flows through a pipe which doubles as the tower holding the steps to the slide. When the facility with the slide closes for the night, the check valve stops the flow of water through the pipe; when the facility reopens for the next day, the valve is opened and the flow restarts, making the slide ready for use again.

Typical applications in the nuclear industry are feed water control systems, dump lines, make-up water, miscellaneous process systems, N2 systems, and monitoring and sampling systems. For example, spacecraft and launch vehicle propulsion propellant control for reaction control systems RCS and Attitude Control Systems ACS and aircraft hydraulic systems.

A check type of check valve is installed on each of the individual gas streams to prevent mixing of the gases in the original source.


For example, if a fuel and an oxidizer are to be mixed, then check valves will normally be used on both the fuel and oxidizer sources to ensure that the original gas cylinders remain pure and therefore nonflammable. InNASA's Jet Propulsion Laboratory slightly modified a simple check valve design with the intention to store liquid samples indicative to life on Mars in separate reservoirs of the device without fear of cross contamination.

Check valves used in domestic heating systems to prevent type of check valve convection, especially in combination with solar thermal installations, also are called gravity brakes.