Sea Side Scrap Book » Stepwise Procedure To Inspect The Anti-Siphon Valve

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.

To prevent this scenario from playing out, most states mandate that anti-siphon and/or back-flow prevention devices be installed in outdoor plumbing. The anti-siphon valve is located on the outlet of the pump. This is the most appropriate location for the valve to install as it works against gravity and prevents draining on the tank. When pressure is applied from the pump, the valve gets opened and then closes tightly at the moment the pump pressure stops. At times when negative drainage occurs the anti-siphoning valve will close more tightly.

This valve also prevents gas siphoning. Gas siphoning is the process of moving gasoline from one tank to another using physics concepts and a clear plastic tube. Gas siphoning can be used for illegal purposes such as stealing gasoline from another tank. Also, this prevents the pollutants to enter the tank. Well, this takes place with the presence of a non-wet u-cup seal around the tank.

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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.

First thing that is to be kept in mind while operating anti- siphon valve is, run the lawn sprinklers so that they fill with water then turn them off.

Now we need to shut off the water supply running up to the pipe which is further directed to your house. Having done this, hollow out the piping located near the anti- siphon valve. Use a plumber’s wrench to detach the pipe connected to the valve.

Remove the sprinkler head. Watch for water to flow out of the pipe that you opened. If there is water flowing, then your anti-siphon valve has failed. If there is none and water is still standing in the pipe that the sprinkler head attached to, then it is working properly.

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.

Scott Rodgers is a great expert who has been writing on plumbing for a long time now. His knowledge has given motivation to a host of workers, ranging from Buffalo Grove Plumbers (Need one?click here!) to Fort Sheridan Plumbers (Need one?click here!).