How to Replace the Anti-Siphon Valve on Your Sprinkler
- Turn Off the Water. Make life easier on yourself by turning off the water to your sprinkler system. ...
- Saw Off the Valve. In this step, you will have to saw off the pipe that is connected to the valve. ...
- Get Your Replacement. ...
- Begin the Installation. ...
- Install the New Valve. ...
- Turn the Water Back On. ...
How do you fix a leaking anti siphon valve?
- Turn off the water to the faucet and open it before servicing or removing a built-in anti-siphon valve.
- Unscrew the plastic cap covering an anti-siphon valve permanently installed inside a frost-free spigot or other outdoor faucet.
- Remove the screws holding the valve to the faucet body with a Phillips screwdriver.
How to fix anti siphon valve on faucet?
How to fix anti-siphon valve on an outdoot faucet hydrant silcock.Vacuum Valve Replacement Parts https://amzn.to/2RXrN87Vacuum Valve Replacement https://amzn...
How do you repair a sprinkler control valve?
How to Replace a Valve Solenoid
- Shut off the water supply to the sprinkler system.
- Remove the two wire connectors on the wires leading to the bad solenoid, then untwist the wires to separate them.
- Remove the old solenoid from the sprinkler valve by turning it counterclockwise.
Why is my anti siphon valve leaking?
The most interesting part of this build is the valve. Anyone could have bought an off-the-shelf solenoid valve, not [Valentin], he designed his own. It is simple and just pinches the water supply ...
What does an anti-siphon valve look like?
0:232:56Rain Bird Anti-Siphon Valves: Basic Operation - YouTubeYouTubeStart of suggested clipEnd of suggested clipYou'll find the anti-siphon valve an anti-siphon valve is a combination valve and atmosphericMoreYou'll find the anti-siphon valve an anti-siphon valve is a combination valve and atmospheric backflow preventor which means it serves two functions.
Why is water coming out of my anti-siphon valve?
When an anti-siphon valve leaks, it could be because dirt has gotten into the valve and is preventing the poppet from seating completely when the water is turned on. The problem could also be a worn poppet or rubber gasket.
How much does it cost to replace anti-siphon valve?
More advanced repairs are a damaged backflow preventer at $25–$420, a malfunctioning sprinkler system controller at $60–$225, or broken pipes at $100–$500....Sprinkler Systems Repair Costs.National Average Cost$212Maximum Cost$500Average Range$75 to $2501 more row
Are anti-siphon valves universal?
Universal, hose bib anti-siphon valve, helps prevent the backflow of contaminants from the garden hose entering the home water supply, fits standard outdoor hose faucets, 3/4" female inlet x male hose thread outlet, prevents outside water from siphoning, through an outside faucet & contaminating the drinking water.
How do I know if my sprinkler anti siphon valve is bad?
Signs You Have a ProblemThe Water Won't Shut Off. If you have this problem, it's very likely the solenoid. ... Low or Uneven Water Pressure. The solenoid controls the water pressure. ... Water Leaks. There are many points in a sprinkler system that can leak. ... Current Testing. ... Valve Inspection. ... Parts Replacement.Sep 30, 2020
Do I need an anti siphon valve on my sprinkler system?
An anti-siphon valve is an essential irrigation part that should not be left off your supply list. If you want to keep your drinking water safe while providing yourself with peace of mind then an anti-siphon valve is just what you need.
How much does a sprinkler valve cost?
Sprinkler Valve Replacement Cost. The cost to replace a sprinkler valve runs about $12.50 to $40 each for most models, plus labor expenses. The valve controls the release of water to the various zones in the yard.Sep 8, 2021
How do I fix my backflow?
0:124:13719 12'' 2'' Backflow Preventer Repair - YouTubeYouTubeStart of suggested clipEnd of suggested clipTo open and inspect your valve. You will need a wrench a flathead screwdriver a Philips headMoreTo open and inspect your valve. You will need a wrench a flathead screwdriver a Philips head screwdriver. And an fda-approved lubricant.
How long should a backflow preventer last?
How often does my backflow preventer need to be tested? Reduced Pressure Zone (RPZ) assembly needs to be tested annually and rebuilt every 5 years. Double Check Valve (DCV) assembly needs to be tested every 3 years.May 2, 2014
How do you remove a backflow spigot preventer?
2:3113:18HowTo Get Rid of That Horrible BackFlow Preventer on Your Hose ...YouTubeStart of suggested clipEnd of suggested clipOff. You got to get that out and so you want to take some PV Blaster and spray. It since that sinceMoreOff. You got to get that out and so you want to take some PV Blaster and spray. It since that since those are two dissimilar metals you get a dielectric.
How does an anti-siphon faucet work?
When a hose is attached to the threaded end, the fitting provides anti-siphon protection by allowing air instead of contaminated water to suck back into the pipes when a negative pressure event occurs in the water supply system.Dec 9, 2021
How do I stop my outdoor faucet from spraying?
Many older outdoor spigots are equipped with an “add-on” hose connection vacuum breaker (HCVB), and if water is spraying out it means the rubber gasket inside has failed. The vacuum breaker prevents water from flowing backward into the house. (Vacuum breakers are built into newer frost-proof water valves.)Aug 19, 2019
What is an anti siphon valve?
Anti-siphon valves are the primary type of valve used for residential irrigation systems. There are several very important rules that apply when you are using or installing an anti-siphon valve. They MUST be installed in the correct way or they will not work!!
What pipe is needed for an anti-siphon valve?
Anti-siphon valves must be installed 6″ higher than the highest sprinkler head or emitter outlet. The anti-siphon valve inlet pipe must meet local plumbing code requirements for exposed pipe. Generally that means using metal pipe such as copper, brass, or galv. steel. No other on/off valves may be installed on the downstream side ...
How high should a sprinkler head be?
The normal rule is at least 6 inches above the top of the highest sprinkler head, some brands say it must be 12 inches. If it isn’t higher, the built-in backflow preventer will not work. The anti-siphon valve will also spill water from the air vent if not installed higher than all the sprinklers or emitters.
How deep should a pressure line be for an anti siphon valve?
This is because the Uniform Plumbing Code only allows plastic pipe installed outdoors to be used on pressure lines if it is at least 18″ deep. Anything less than 18″ deep must be metal.
What is the wire on a solenoid?
The other solenoid wire connects to a “lead” wire which goes to the specific station connector for this valve zone on the controller. The wire splices should be made using a special waterproof wir e splice connector.
How long does it take for a water valve to stop?
Water will probably flow out of the valve outlet for a few seconds when you do. It should stop by itself after 30 seconds or so . If the water doesn’t stop flowing from the valve try placing your hand over the outlet to block the flow of water.
Why won't my valves open?
The #1 reason valves fail to open or close is something blocking or partially blocking one of these ports. Simply flushing the pipes out well will eliminate many of these failures of “brand new valves.”. Install the valve on the supply pipe. Do NOT install the pipe on the outlet side of the valve yet.
Where are the valves in a lawn irrigation system located?
These control valves are typically located inside a valve box, which may contain four or more valves, depending on the system layout. Common symptoms of a faulty valve include:
What does it mean when a sprinkler head leaks?
Leaks around the valve or at the sprinkler head farthest from the valve (indicating the water doesn't completely shut off) Inadequate water delivered to the sprinkler heads. Sprinkler heads that simply don't come on. Featured Video.
When is the irrigation valve closed?
The valve is closed when the handle is perpendicular to the pipe. If there is no shutoff valve for the irrigation system, you may have to shut off the water at the home's main shutoff or the water meter. Aaron Stickley.
How do I replace an anti-siphon valve?
First, you'll need to make up for the pipe height that was lost by cutting the piece of PVC pipe when you removed the old valve (the anti-siphon valve needs to be higher than the sprinkler heads). So, first , attach a coupler to the top of the sawed off PVC pipe. Use PVC primer and glue on the edges of the pipe and inside the coupler. Then, cut off a short 2 or 3-inch section of PVC pipe and insert it into the coupler. Do the same on the piece of pipe that is used for the first sprinkler head.
How to stop a leaking sprinkler system?
If the anti-siphon sprinkler valve on your sprinkler system is leaking, you may be able to stop the leak by simply tightening the screws on the valve with a screwdriver. However, more often than not, a leak in an anti-siphon valve will require that the valve be replaced.
Do you need to cut off the PVC pipe on the sprinkler head?
Therefore, you'll need to cut off the piece of PVC pipe that runs into the bottom of the first sprinkler head as well.
Can you use a PVC reducer coupler on a PVC pipe?
However, if you're unable to find a replacement that is the exact same size, you may be able to use a PVC reducer coupler to help match up an anti-siphon valve that uses a PVC pipe of a different size. If you are unsure, ask someone in the plumbing department as they should be able to help you.

Water
Step 2 - Remove The Valve
- Once the water is shut off, take a pair of pipe wrenches and remove the central fitting so you can unscrew the anti-siphon valve cap from the main pipeline. You can then take it to the store with you when you get the replacement, as to get a proper fit. This will ensure you purchase the appropriate anti-siphon valve for the job at hand.
Step 3 - Wrap Around Pressurized Seals
- Take your plumber's tapeand wrap the threads of the male end of your pipes. This is the end with the threads and will be on the spigot end of your operation. Wrap this tape several times around the threads. Once the anti-siphon valve has been installed over this plumbers tape, it will cause a pressurized, watertight seal.
Step 4 - Installing Your New Valve
- Once you have the hardware needed for the task, simply use your wrench to install the connector to your existing water line. Your anti-siphon valve is a simple screw-on attachment to your existing water connection. Make sure that the fittings are tight and secured to prevent the water pressure from blowing the new cap off once it is installed.
Step 5 - Test For Pressure Leaks
- If you follow these instructions and complete your task, simply turn your water back on and check for pressure leaks. If your valve does not leak when you turn your water on, you have installed it successfully. When you purchase through links on our site, we may earn commissions at no cost to you.