How to Repair an Irrigation Valve

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How to Repair an Irrigation Valve

Irrigation valves are important parts to any sprinkler system. If the valve shows signs of damage, then owners should repair or replace the valve as soon as possible as neglecting to do so leads to further damage to the irrigation system farther down the line. Fortunately, repairing an irrigation valve is a simple process. Several parts compose a single valve, and usually only one of these parts must be replaced. Users do not need experience and can easily replace a single part or the entire system themselves. Before repairing an irrigation valve, owners must learn the parts that make up the system, how to identify the source of the problem, and then make necessary repairs.

Parts of the Irrigation Valve

Irrigation valves are not complex devices, and users do not have to replace the entire valve if they notice leaking or experience other problems. Taking the time to learn about the different parts of the irrigation valve helps users determine which parts they need to replace. Doing so saves users time and money.




Electric device that shuts off, releases, and distributes the water through the irrigation system

Bonnet and Poppet

Form a tight seal over the air vent to prevent leakage


Creates a pressure differential to open the valves or equalises the pressure to close them


Housing that holds the internal parts of the irrigation system

Shoppers can find each of the parts of the irrigation valve sold separately or as a kit. If the body of the irrigation valve is cracked or has other damage, then they should replace the entire valve due to the extent of the damage. However, the solenoid, bonnet and poppet, or diaphragm are all individually replaceable.

How to Identify a Bad Irrigation Valve

Knowing the symptoms of a broken irrigation valve makes it easier for users to identify which part is causing the problems. Since each valve is made up of many parts, there are a number of different ways for it to malfunction. One common symptom is a leak around the valve, which indicates a broken solenoid or cracked housing depending on the location of the leak. If the sprinkler system receives no water or has low water pressure, it is a sign of a worn out diaphragm. Leaking from the top of the irrigation valve or the bell indicates a broken bonnet and poppet. Isolating where the problem occurs makes it easy for users to determine which part to replace.

How to Clean Debris from the Irrigation Valve

A malfunctioning irrigation valve could be a sign of a clog rather than a broken part in the valve. Cleaning debris from the valve is often all users need to do to get the irrigation valve up and running again. To clear debris from the irrigation valve, users start by turning off the system and main water supply. Then they unscrew the screws at the top of the valve and remove the solenoid. Next, they remove the bonnet and poppet followed by the diaphragm and diaphragm spring. While doing this, they should inspect each piece to see if it needs to be replaced. With all parts removed, users reach down into the body to remove pebbles, dirt, and other obstructions. They run a small piece of wire through each port to remove buildup and restore water flow. When they are satisfied that all debris is clear, they put the valve back together.

How to Replace an Irrigation Valve

Replacing the irrigation valve is just as simple as cleaning it. Before taking it apart, users should turn of the irrigation system as well as the water. If the valve has a bleed screw, then users should turn this to relieve pressure from the system. Starting from the top, users begin removing the screws and the pieces of the sprinkler system. Users who choose to replace just the inner parts should clean out the valve body before putting the new parts in place. However, if the body shows signs of damage, it is best to replace it as well.

Putting the Irrigation Valve Together

Inside the body, users first press in the diaphragm, then the spring followed by the bonnet and poppet. They screw these parts down tightly before reattaching the solenoid and the bell. Finally, they turn on the water and check for leaks. If leaks are present, they should recheck the screws to make sure they are threaded correctly.

How to Buy Irrigation Valves on eBay

Find great deals on complete irrigation valves, parts, and repair kits on eBay. Use the search bar on each eBay page to find the parts you need based on keywords. Narrow the listings further by specifying the price range, condition, brand, and more. Carefully read the item description and view photos to make sure the irrigation valve is the one you need before making a purchase.

Irrigation valves make up an important part of the sprinkler system and ensure that water reaches all the sprinklers for even watering of the yard or plants. Fortunately, repairing a few broken parts or replacing the entire system is a simple process even for inexperienced owners. With a little bit of time, users can have their irrigation system up and running for a fraction of the cost of hiring a professional.

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