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 Sprinkler Valve?

By Adam Hill
Updated May 23, 2024
Our promise to you
InfoBloom 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 InfoBloom, 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.

Landscaping, if properly maintained, can make a significant positive difference in the look of a yard and the market value of a home. A sprinkler system is often included when a yard is landscaped, to ensure adequate irrigation of the lawn and other plants. A sprinkler valve is a mechanism that controls the flow of water in a sprinkler system. These valves can be operated manually or by a timing device.

Modern sprinkler valves are controlled by an electrical device called a solenoid. This device opens and closes the path for water to pass through the valve. The sprinkler valve has two pipes connected to it: the inlet and the outlet. The inlet pipe brings water from the household supply to the valve. The inlet ends in the middle of the valve with a stopper called a diaphragm, which is held in place with a rod and a spring which are connected to the top of the valve housing.

When the solenoid is activated, it allows air inside the valve to escape. Without this pressure inside the valve, the diaphragm raises up and lets water flow into the outlet, and out into the sprinkler system. When the solenoid is activated in the other direction, the opposite happens, and the diaphragm lowers back down onto a gasket, closing the sprinkler valve.

It is possible for a sprinkler valve to fail in the course of normal operation, even if it is new. If it fails to close, this is almost always because something has gotten stuck inside it. Grains of sand, small rocks, twigs, and even insects can cause the failure of a valve. Simply opening up the valve and removing the obstruction usually solves the problem.

Once the valve has been cleaned, the inlet pipe leading up to the valve should be cleaned out by letting water run through it for one or two minutes. It is also advisable to install a filter upstream from the valve to prevent future problems, especially if failure has occurred more than once. The cost of continually repairing or replacing valves is higher than the cost of a filter.

When a sprinkler valve fails to open, this is usually due to a defect in the solenoid or in the wiring leading to it. The only solution for this is to replace the solenoid or the wiring accordingly. Solenoids are notoriously difficult, if not impossible to adequately repair, so replacement is the best way to go.

InfoBloom 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 armjim — On Jul 02, 2009

I have an 8 year old sprinkler system that never caused me any problems until a few months ago. It consists of 5 Hunter SPV valves and Raintree 6 zone. I recently replaced all solenoids, wiring, checked and cleaned the rubber diaphragms, and carefully placed them back in. All zones work except 3 and 5. It's perplexing to me. Can you help me out?

InfoBloom, in your inbox

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

InfoBloom, in your inbox

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