Attach its hose to the sprinkler zone control valve. Use an air pressure setting of 40 to 80 pounds per square inch (PSI). Too much pressure could crack the pipes. Close the backflow valve to ...

Valves are essential for any plumbing system ... Depending on your yard size, you might have only one sprinkler zone, or there might be multiple. If your home has more than one zone and you ...

Locate this valve’s drain cap and open the valve ... hose leading from the water main supply and blow out your sprinkler system zone by zone, they should also close the main shut-off valves.