losing prime

[washman2016]

One of my ss bays is having a strange problem. When the pump starts it take about 5 sec for the pump to come to full pressure. It then works fine until you release the handle. When the handle is pulled it takes 5 sec or so to get back to full pressure. Also the pump really chatters a lot when the handle is released. I have checked all the valves and all are in working order. I do not find any kind of leaks. Can the pressure regulator be the problem?

 

[Keith Baker]

It sounds to me like its sucking air. Is there water dripping from under the pump manifold when it's running? That usually means a low pressure seal letting air in. If it's not in the pump itself, then check everything on the supply or bypass lines for a place that air can be getting pulled into the inlet side of the pump.

 

[washman2016]

It sounds to me like its sucking air. Is there water dripping from under the pump manifold when it's running? That usually means a low pressure seal letting air in. If it's not in the pump itself, then check everything on the supply or bypass lines for a place that air can be getting pulled into the inlet side of the pump.

Dry as a bone. Hoses and connections all look good. I agree sounds like its sucking air but wouldn't that happen when its at pressure as well?

 

[washman2016]

Update: I put pressure on the inlet water and found a split brass connection on the bypass hose. Replaced it and works great again. Thanks for the help