Air in water.

[moreks]

I run my own water supply, consisting of a bore and submersible pump, tank, and pressure pump.
The tank gravity feeds the pressure pump.
I recently (3 months) replaced my pressure pump.
A couple of weeks ago I noticed a small amount of air being discharged when I open a tap. This is continuing, and occurs in all taps.
This is not a major problem, more an interesting one.
The only answer I have come up with is an extremely low tank level.

I await your replies

Bill (moreks)

 

[justlead1]

Hi. With the negative pressure created on the suction side of the pump, air can be sucked in if there is a dodgy joint or corrosion.

 

[moreks]

I understand that, but wouldn't taht then leak, with the flooded pump suction.

 

[GQuigley67]

turn the speed down on your new pump see if that helps

 

[justlead1]

HI. (I understand that, but wouldn't taht then leak, with the flooded pump suction.) Under most conditions yes. But It may be the standing pressure in this section is a lot less than the negative head developed by the pump.