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The last 4 posts

Monday, May 21st 2007, 1:12pm

by Bill Painter

One thing to consider is if the valve used is not passing a lot of water, it may have a tough time closing. There MUST BE BACKPRESSURE on a valve diaphragm or it won't close properly. Drip systems are well known for not closing down if there's less than a 1/4 gal per minute flowing thru' them.
Consider adjusting the flow control on the top of the valve if the dripping continues for much more than an hour or two at the lowest head.
You can also put a screwdriver to your ear with the business end on the valve to hear if it's weeping or not.

Thursday, May 17th 2007, 3:29pm

by jmduke7

I agree with HKDK, it is probably just normal drainage.

Thursday, May 17th 2007, 9:47am

by HooKooDooKu

How long does the water continue to drip?

The water shouldn't stop flowing the moment the valve turns off. The water in the drip tubing will still be pressurized and will continue to flow out of the emitters until the pressure drops. Then you have to consider gravity. If the tubing is on a slope, the water in the tubing will continue flowing out the lowest level emmitter until much of the tubing is drained.

Thursday, May 17th 2007, 8:38am

by Tee Jay

continuous drip from emitters

I have a Hardie 100 series system. There are 3 zones. One of the zones turns on and off correctly, but continues to drip water from the emitters. Does something need to be replaced? I am leaving for 3 months and don't want to waste water and would like to fix it.