The professionals like to blow them out for obvious reason.
I had one installed myself for over 15 years. Put in automatic drains (Home Depot). I make sure that the supply in shut off and each zone is cycled to makes sure the valves are opened to allow the water to drain through the auto drain.
Never had a problem and maintenance cost is zero besides fixing the ones that I mowed over.
You will have to do some research to make sure they are installed properly. Everythings is a function of how much pressure you gets and how many valves per zone. There are booklets at HomeDepot.
Gordon
I had one installed myself for over 15 years. Put in automatic drains (Home Depot). I make sure that the supply in shut off and each zone is cycled to makes sure the valves are opened to allow the water to drain through the auto drain.
Never had a problem and maintenance cost is zero besides fixing the ones that I mowed over.
You will have to do some research to make sure they are installed properly. Everythings is a function of how much pressure you gets and how many valves per zone. There are booklets at HomeDepot.
Gordon
