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Friday, June 2nd 2017, 4:10pm

Orbit valve water hammer when closing

I had a leak in a zone so I cleaned out the a piece of trash in the orbit 57101 and reassembled it. Now the valve shutters when it turns off. I have replaced the diaphragm with a new one, did not help. The valve did not do this before I took it apart so I have disassembled it at least 6 times and checked the assembly. I installed the old diaphragm and it did not shutter as bad as the new one. After the final assembly it shutters bad enough to shake the whole manifold. I have bled all the air out and manually open and closed the valve. Help I am out of ideas.

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