We are independent & ad-supported. We may earn a commission for purchases made through our links.
Advertiser Disclosure
Our website is an independent, advertising-supported platform. We provide our content free of charge to our readers, and to keep it that way, we rely on revenue generated through advertisements and affiliate partnerships. This means that when you click on certain links on our site and make a purchase, we may earn a commission. Learn more.
How We Make Money
We sustain our operations through affiliate commissions and advertising. If you click on an affiliate link and make a purchase, we may receive a commission from the merchant at no additional cost to you. We also display advertisements on our website, which help generate revenue to support our work and keep our content free for readers. Our editorial team operates independently of our advertising and affiliate partnerships to ensure that our content remains unbiased and focused on providing you with the best information and recommendations based on thorough research and honest evaluations. To remain transparent, we’ve provided a list of our current affiliate partners here.

What is a Clack Valve?

By M. Rosario
Updated May 17, 2024
Our promise to you
About Mechanics is dedicated to creating trustworthy, high-quality content that always prioritizes transparency, integrity, and inclusivity above all else. Our ensure that our content creation and review process includes rigorous fact-checking, evidence-based, and continual updates to ensure accuracy and reliability.

Our Promise to you

Founded in 2002, our company has been a trusted resource for readers seeking informative and engaging content. Our dedication to quality remains unwavering—and will never change. We follow a strict editorial policy, ensuring that our content is authored by highly qualified professionals and edited by subject matter experts. This guarantees that everything we publish is objective, accurate, and trustworthy.

Over the years, we've refined our approach to cover a wide range of topics, providing readers with reliable and practical advice to enhance their knowledge and skills. That's why millions of readers turn to us each year. Join us in celebrating the joy of learning, guided by standards you can trust.

Editorial Standards

At About Mechanics, we are committed to creating content that you can trust. Our editorial process is designed to ensure that every piece of content we publish is accurate, reliable, and informative.

Our team of experienced writers and editors follows a strict set of guidelines to ensure the highest quality content. We conduct thorough research, fact-check all information, and rely on credible sources to back up our claims. Our content is reviewed by subject-matter experts to ensure accuracy and clarity.

We believe in transparency and maintain editorial independence from our advertisers. Our team does not receive direct compensation from advertisers, allowing us to create unbiased content that prioritizes your interests.

A clack valve is a mechanical apparatus that allows fluid to flow from one direction while at the same time preventing the fluid from flowing back the other direction. The basic mechanism for a clack valve involves an object that would both permit and obstruct the fluid whenever it flows from a specific direction. A clack valve achieves this by using a hinged valve that opens when upstream pressure from a fluid exceeds the minimum pressure required need to open it — also known as cracking pressure. The hinged valve makes a clacking sound whenever it closes due to fluid flowing from the opposite direction, hence the name "clack valve."

Clack valves are a type of check valve. They can be found most anywhere and perform numerous functions that are as varied as the materials of which they are made. When used for home or industrial purposes, clack valves can be made from plastic or metal alloy. A clack valve's function can range from regulating the amount of water coming out of a faucet to sealing a leak in a gas line to delivering oil in a pipeline.

Even the human body contains some form of clack valves. Heart valves are made of human tissue and resemble flaps that help move blood along the blood vessels. The valves play a vital function by preventing blood regurgitation — a condition where blood flows backward, which can be deadly if not properly treated.

Clack valves tend to operate independently from human control, which is ideal for continuous fluid surge. There are times, however, when they are needed to be used to regulate fluid flow. For this purpose, clack control valves are used.

A clack control valve is different from regular clack valves because of the way the valves operate. These valves can be controlled manually or by using an automated machine. A controllable valve allows the operator to maintain a desired level of fluid from entering or leaving a container. It also helps regulate the speed and flow of a fluid flowing through a pipe.

One particular use for clack control valves is for water softening. The process of water softening requires the use of either a brine or chemical solution. These reagents are use to "regenerate" the resins used to soften the water. By using clack control valves to regulate the flow of reagents, water softeners maximize the efficiency of the solution, minimize environmental impact, and conserve reagent use.

About Mechanics is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.
Discussion Comments
By NathanG — On Dec 02, 2011

@David09 - That’s a case where I guess you didn’t need the pressure regulation that a clack valve gave you. However, they are useful in other outdoor settings.

If you want a way to water your garden using a drip method, there are specialized hoses that use a clack valve to do a slow release of the irrigation to your plants.

It saves water and ensures that you will get steady irrigation at just the right amounts.

By David09 — On Dec 01, 2011

We had a water softener in our house when we bought it. It wasn’t our personal preference; it was just something that the prior owner had installed. It didn’t bother me for awhile.

It did make the water kind of soft and sudsy. I suppose there might be some benefit to that but I didn’t care either way. The only time the water softener became an issue was when we were trying water the yard.

For some reason, the water pressure was low. We didn’t know why this was, and finally called an inspector to come in and check on it. He said all the outside water pressures were fine, and then finally he had a flash of inspiration.

He asked if we had a water softener. We said we did. We turned it off, and the pressure came back to normal.

About Mechanics, in your inbox

Our latest articles, guides, and more, delivered daily.

About Mechanics, in your inbox

Our latest articles, guides, and more, delivered daily.