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jafaber

Unregistered

1

Monday, April 26th 2010, 12:21pm

One zone not working correctly

I have one zone that is not working in my front yard. When turned on by the timer, the value is opened but does not get much pressure. If I open the bleed screw the system comes on correctly. The one thing that I did notice when looking through all the posts was that the height of the valve (anti-syphon type) needs to be 12 inches above the highest sprinkler. Unfortunately it is not. Would that cause a lack of pressure? or do I have a leak I need to find?

2

Monday, April 26th 2010, 1:53pm

Try replacing the solenoid to that one zone.

mrfixit

Moderator

Posts: 1,474

Location: USA

3

Monday, April 26th 2010, 2:02pm

The diaphragm's bad. Depending which valve you have you can replace the diaphragm or changing the valve adapter is sometimes a better option. Plastic change the adapter. They're cheap enough. With brass if the valve isn't super old they sell rebuild kits or you can just change it.

jafaber

New Member

4

Monday, April 26th 2010, 2:31pm

I have tried different solenoids and I get the same result. They are plastic Rainjet valves. Any idea on where to get the replacement parts?

mrfixit

Moderator

Posts: 1,474

Location: USA

5

Monday, April 26th 2010, 3:55pm

It's probably one of these three diaphragms. Different name on the valve same diaphragm.

www.sprinklerwarehouse.com/Irritrol-100236-Replacement-Diaphragm-p/100236.htm

www.sprinklerwarehouse.com/Irritrol-539001-Diaphragm-2500-2700-1-214B-Valves-p/539001.htm

www.sprinklerwarehouse.com/Irritrol-100232-H-Diaphragm-Irritrol-205-Valves-p/100232-h.htm



If you don't see it there I'll need the model number or a picture of the valve. If it's a valve adapter just change the whole adapter.

This post has been edited 1 times, last edit by "mrfixit" (Apr 26th 2010, 4:01pm)


Wet_Boots

Supreme Member

Posts: 4,080

Location: Metro NYC

6

Monday, April 26th 2010, 4:39pm

A failed diaphragm assembly could leave some pieces in the pipe. Odds are good that it's the 100232-H assembly, and that a plastic piece broke away. Flush the valve once you have the top off. If all the heads on a zone are located higher than the antisyphon valve feeding them, you have no backflow protection.

jafaber

New Member

7

Tuesday, April 27th 2010, 10:06am

Thanks for the help. It was the diaphram, I replaced it last night (if I recall it was the RJ711) and they had the diaphram at OSH (local hardware store). What threw me was that both of the valves that I tried had bad diaphrams.

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