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geno

New Member

1

Monday, April 9th 2007, 1:21pm

Chattery Valve

I have 5 Hunter antisiphon valves in my system. When one of the valves comes on it chatters like crazy for about 15 seconds before it finally opens up completely. This is my highest flow leg on the system. The other 4 valves open and close fine.

What is causing the chatter and more importantly, how do I eliminate it?

Thanks,
Geno

Wet_Boots

Supreme Member

Posts: 4,062

Location: Metro NYC

2

Monday, April 9th 2007, 2:25pm

Does the zone with the chatter have a lot of slope to it?

geno

New Member

3

Tuesday, April 10th 2007, 3:14am

The zone has lots of slope. The line coming from the valve splits and goes both up slope (rise of about 1 foot) and down slope (drop of about 6 feet.

This zone has lots of pop up sprayers and the flow in it is much greater than any of the other zones I have. I was contemplating splitting this zone in two, where one zone goes up and the other zone goes down.

Wet_Boots

Supreme Member

Posts: 4,062

Location: Metro NYC

4

Tuesday, April 10th 2007, 4:52am

Do the split. It should make a difference. The slope helps drain the pipe, so the initial rush of water is higher than with a zone still filled with water.

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