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How do check valves operate and types of check valves?

Check valves are important in oil and gas systems to prevent the spread of contaminants and to store natural resources. In general, check valves are devices that open and close slowly so that a small amount of water can flow through while the rest of the water is held back by the valve.

What are check valves? Why are they used?

Check valves are used in plumbing to prevent water from entering or leaving a pipe prematurely. When you turn on a faucet, the oil or liquid gas flows through the faucet valve and into the sink. However, if there is too much fluid present in the main body of the pipe, it can overheat and burst the pressure vessels in the pipe. This can release gas that is harmful to humans and property.

Check valves are also used in industrial plants where they’re needed to limit the flow of hazardous fluids to safe levels. Continue to read till the end to explore more about check valves. Check valves can be found on both large and small vessels, but they are most commonly found on larger vessels. A check valve is also sometimes called a “valve-in-valve” (VI) device, as it allows fluid to enter the vessel while denying air access.

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There are several types of check valves: 

 

  •       Manual check valves are the most common type because they are easy to use and require no training for those who want to operate them.
  •       Pressure check valves typically have two outlets, one at the bottom of the valve and one up top.
  •       Flow control valves allow fluid to pass through while denying air access at the same time.
  •       By-pass valves allow fluid to pass through while denying air access either above or below the vessel.

Operation of check valves:

 

Check valves are devices that help to prevent fluid from entering a device or pipe other than the one intended, and can also be used in firefighting to control the flow of fluid. Check valves typically have three parts: the check valve body, and the check valve cap.

The stem is inserted into the pipe before the check valve body is placed over it. When closed, this prevents fluid from entering except through the check valve cap.

The two types of check valves found on most home and office plumbing are open-end and end-of-pipe check valves. Open-end check valves are more common because they’re easy to use and don’t require an intermediary such as a faucet or spigot to function. They’ll usually have a metal disc with either a round or hexagon-shaped hole in it that you fit over the faucet handle when you want to turn them on or off.

End-of-pipe check valves require another piece of equipment, such as a spigot or faucet nozzle, to operate. These checks are done by turning an end-of-pipe check server around so that it enters and leaves each side of the main stem opening at different angles (commonly called “angle series”). This allows for proper fluid flow throughout the system without having to worry about holes in certain areas.

What are the most common types of check valves used? 

Check valves are used in various industries, including the petroleum industry, food processing, chemical production, and fluid distribution. In the petroleum industry, check valves are used to prevent spills from occurring in pipelines. They also play an important role in food processing by controlling the release of gas and oil from plant floors during operations. 

Have a look at the two types of check valves mostly used:

  1. a)     Dual Plate Check Valves are also sometimes called “double-check” valves because they allow both types of fluid to pass through them at the same time. This type of valve is often used in steam turbines and other high-speed machines because it allows for greater efficiency in carrying out turbine blades across different doorways or passages.
  2. b)   Wafer Type Check Valves fall into two categories: those that use wafers as their checking devices (called “wafer-type CHECK Valves”) and those that use doughnuts (called “doughnut-type CHECK Valves”). These two types of check valves can be used interchangeably depending on your application.

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Conclusion

Check valves are used in various industries to prevent fluid from entering or exiting a vessel through a single opening. They come in different forms, such as forged steel check valves and cast-iron check valves. Each type of check valve has its own benefits and drawbacks. Do not compromise with the quality of check valves and purchase the good ones from reputed suppliers.

Explore more about check valves by coming to the ADIPEC exhibition which is set to happen from 31st October to 3rd November 2022. At this event, you can witness various solutions for the oil and gas industry. Meet us, Dutco Tennant LLC at Stall number – Atrium A210. Do not miss this grand exhibition.

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Dutco Tennant LLC has been a leader in supplying various kinds of industrial and engineering solutions for diverse industry verticals from construction to networking to electrical and we established a good company profile. Dutco Tennant LLC supplies products to a high-status list of corporate and government projects, and has contributed to the creation of world class private and public infrastructure such as water and wastewater projects, airports, exhibition centers, shopping malls, networking infrastructure, hospitals, hotels, universities and offices around the Middle East and GCC region.

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