The system has six zones and I used my small Campell Hausfeld hotdog compressor to blow out water, one zone at a time. Repeated the procedure twice. Not sure if I did an adequate job since only a few sprinkler heads popped up and I did not see any water come out from some of the others.
I opened up the two valve boxes, one of them has four zone valves and the other the remaining two. Not sure of the manufacturer of the zone valves but the valve boxes are Orbit branded.
As seen in the pics, each valve has the Philips headed screw. I assume this is a bleed screw and that I should be opening them to bleed out the remaining water. What puzzles me is that the bleed screw is on top and how could it drain the water in the valve with the water being below the screw? Does each zone has to be pressurized with compressed air for bleeding the zone valves?
The property is not level at all. Some of the sprinklers are above the level of the valve boxes and some are below.
There is also one garden hose valve facing up, as you can see in the pic. I did not try opening it since a lot of dirt could fall in and foul the valve. Should I open this valve?
I opened up the two valve boxes, one of them has four zone valves and the other the remaining two. Not sure of the manufacturer of the zone valves but the valve boxes are Orbit branded.
As seen in the pics, each valve has the Philips headed screw. I assume this is a bleed screw and that I should be opening them to bleed out the remaining water. What puzzles me is that the bleed screw is on top and how could it drain the water in the valve with the water being below the screw? Does each zone has to be pressurized with compressed air for bleeding the zone valves?
The property is not level at all. Some of the sprinklers are above the level of the valve boxes and some are below.
There is also one garden hose valve facing up, as you can see in the pic. I did not try opening it since a lot of dirt could fall in and foul the valve. Should I open this valve?
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