Stepwise Procedure To Inspect The Anti-Siphon Valve

An anti-siphon valve is a device that prevents liquid from returning to the line from which it came if a siphon action occurs. An anti-siphon device is frequently required on outdoor irrigation systems to prevent possibly contaminated water to be drawn back into the water supply lines if water pressure decreases in the water supply line.

The anti-siphon valve is located on the outlet of the pump. This strategic location works against gravity and prevents draining on the tank. The valve opens when pressure is applied from the pump and then closes airtight at the moment the pump pressure ceases to flow. The anti-siphoning valve will close more tightly when negative drainage occurs.

Not only does the anti-siphon valve prevent someone from stealing gas, but it completely shuts out any unwanted contaminants with vacuum-tight sealing (made of thermoplastic) around the tank. The seal is a non-wet u-cup. This isolates the control spring. You will want to check from time to time to make sure your anti-siphon valve is operating properly; you can do this yourself without hiring a plumber.

All you need is to gather the tools needed while performing the task. Checking an anti- siphon valve would require tools like plumber’s wrench, shovel, and Teflon pipe tape.

Running the lawn sprinklers so as to fill them with water is the foremost steps in this respect. Now, turn off them after they are properly filled.

Curb the water to the main supply line that is going in the house. Bring out the piping from the ground by digging it accordingly. Disassociate the pipe from the anti- siphon valve. Make use of a plumber’s wrench to unscrew it.

Take off the sprinkler head; also keep an eye on the water flow that comes out of the pipe as you open this. Finding the flow of water from the pipe signifies the failure of the anti- siphon valve and you may need to replace it with a new one. If no water is coming out, your valve is working absolutely fine.

Wrap Teflon pipe tape two to three times around the threads of the pipe you opened and reattach the pipe by turning it clockwise with your plumber’s wrench.

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