Noise coming from sprinkler valve

[crained]

9-21-22



Hi All: I have always appreciated your comments and troubleshooting recommendations. If I may ask for your thoughts on the following:

I have and older Orbit WaterMaster valve. Please see attached photo. I have 4 of these valves in the manifold. I have replaced the diaphragm on all 4 valves with Part Number 57045. I believe the model # of the valve is 57100 or 57101 and is a 1 inch valve. After replacing the diaphragm on zone three and turned on the water system, I heard a humming/buzzing type of noise coming from that number 3 valve. That particular sound was not coming from any of the other 3 valves. Please note that the noise I hear is very hard to describe. But whenever I replaced a diaphragm it seems that I hear that type of noise. Perhaps some of you may know of this sound.

Anyway, I removed the valve cover and diaphragm from zone three and zone one. I placed the valve cover and diaphragm from zone one onto Zone three and visa versa. I did not hear that particular noise from zone one but did continue to hear the nose coming from zone 3.

Any assistance or thoughts will be appreciated.

Thank you so much in advance.