Cavitation in my pressure pump

[Bryce C]

I've got cavitation happening in my pressure pump and it is causing heavy pulsing coming through the solution lines, not good. From what I understand it is usually a leak on the inlet side of a pump causing it to draw in air. As of yet I can't find it. There is something screwy in my chemical metering system, I'm not using it for now until I can go through the whole thing, but from what I gather my chemical injection happens on the discharge side of the pressure pump so I don't think that has anything to do with it. The only 2 filters I know of are coming out of the fresh water reservoir before the transfer pump, and the one in the water box. Are there any more filters in the CDS 4.8 that I should check? Aside from that just check all hoses and fittings, or..? I'm going to our supplier in 7 days to change out many hoses and fittings, I'd like to wait until then to address this but am afraid of damage happening in the mean time. How quickly can cavitation start chewing through fittings and other parts?

 

[Dwain Ray]

I've got cavitation happening in my pressure pump and it is causing heavy pulsing coming through the solution lines, not good. From what I understand it is usually a leak on the inlet side of a pump causing it to draw in air. As of yet I can't find it. There is something screwy in my chemical metering system, I'm not using it for now until I can go through the whole thing, but from what I gather my chemical injection happens on the discharge side of the pressure pump so I don't think that has anything to do with it. The only 2 filters I know of are coming out of the fresh water reservoir before the transfer pump, and the one in the water box. Are there any more filters in the CDS 4.8 that I should check? Aside from that just check all hoses and fittings, or..? I'm going to our supplier in 7 days to change out many hoses and fittings, I'd like to wait until then to address this but am afraid of damage happening in the mean time. How quickly can cavitation start chewing through fittings and other parts?

Last time my pump pulsed it was a stuck bypass regulator all i had to do is run the machine and lower the pressure all the way down and bring it back up to working pressure. But yes it's generally air getting in on the suction side

 

[they live]

It can happen from leaks on the pressure side too.

Maybe check the tightness of fittings first. You might find the bad one by the feel of putting a wrench on it.