one zone low pressure

kingtpt

New Member

Posts: 3

Saturday, July 17th 2010, 5:57pm

one zone low pressure

I have one zone that gets low pressure when i use the automatic start but it i manally start the zone it works fine. what could be the problem?

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mrfixit

Moderator

Posts: 1,299

Location: USA

Saturday, July 17th 2010, 6:16pm

If you're turning on the valve manually at the valve itself then the problem is the diaphragm. I'd change the diaphragm or change the valve depending on the model valve.

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kingtpt

New Member

Posts: 3

Saturday, July 17th 2010, 6:44pm

after putting in new diaphragm do you have to wait for the system to pressurize up or should it work right away

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mrfixit

Moderator

Posts: 1,299

Location: USA

Saturday, July 17th 2010, 7:58pm

I always open a bleeder screw or the solenoid when I turn the water back on after installing or repairing a valve. You'll want to get the air out of the valve using the bleeder screw at some point.