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Friday, August 27th 2010, 7:41am

Author: ombra

thanks

Thanks for the reply, sorry for the duplicate thread. This is the first chat site I've have ever visited.

Wednesday, August 25th 2010, 8:02pm

Author: ombra

check valve

I am replacing four hunter pgp rotors with hunter 1-20's. One is lower in elevation that the others and will have a check valve. Is it okay to have check valves on the other 3 (since I already ordered them) or should the other 3 be without a check Valve.

Wednesday, August 25th 2010, 6:46pm

Author: ombra

low sprinkler head leak

Thanks If I do decide to replace all three would only the low rotor need to have a check valve?

Tuesday, August 10th 2010, 7:14am

Author: ombra

low sprinkler head leak

This zone has 3 Hunter PGP rotors. One end was just regraded and one rotor is a few feet lower than the other two. When the zone shuts it siphons. Will replacing the rotor with the Hunter I-20 ultra series rotor with drain check valve corrct this?? If so, would need to replace all three rotors to the I-20?