The booster pump works when using the direct-feed from the supply hose to the pump. When primed, and drawing from the tank, it gradually loses prime and the pressure drops. This takes about 12-15 seconds, not immediately as though I left the valve open. However, when I keep a supply hose attached to the valve (closed valve), it maintains prime and functions normally. I think that the Banjo valve is leaking when closed. The strange thing is--there is no water dripping as it would if a hose clamp were lose & leaking.
Any ideas? I don't want to simply replace the valve & hope it works, throwing money at it.
Tim Teed said
Oct 27, 2015
check the hose clamps. They don't always stay fully tightened. It may be your banjo valve. You want to keep a couple extra on hand anyways so just swap it out and see what happens. I think I get mine from Zoro tools.
Michael Derose said
Oct 27, 2015
It could be the check valve in the tank as well.
Brandon Vaughn said
Oct 27, 2015
Is there a multi-tap on that? Check to see if when the valve is closed, it is drawing air through the multi-tap.
Jeffrey Kirby said
Oct 28, 2015
I have tightened all the hose clamps. Don't see any leaks there.
I did not know that there is a check valve inside the tank. That will be difficult to tackle!!
And no multi tap on this pump setup.
I think I will change the banjo valve, if the check valve proves to be ok
Jeremy Harrison said
Oct 28, 2015
You may want to reach inside the tank and make sure the tube going down into the fluid has not backed out or vibrated loose causing you to suck air at the connection point at the top of the tank.
The booster pump works when using the direct-feed from the supply hose to the pump. When primed, and drawing from the tank, it gradually loses prime and the pressure drops. This takes about 12-15 seconds, not immediately as though I left the valve open. However, when I keep a supply hose attached to the valve (closed valve), it maintains prime and functions normally. I think that the Banjo valve is leaking when closed. The strange thing is--there is no water dripping as it would if a hose clamp were lose & leaking.
Any ideas? I don't want to simply replace the valve & hope it works, throwing money at it.
Is there a multi-tap on that? Check to see if when the valve is closed, it is drawing air through the multi-tap.
I have tightened all the hose clamps. Don't see any leaks there.
I did not know that there is a check valve inside the tank. That will be difficult to tackle!!
And no multi tap on this pump setup.
I think I will change the banjo valve, if the check valve proves to be ok
You may want to reach inside the tank and make sure the tube going down into the fluid has not backed out or vibrated loose causing you to suck air at the connection point at the top of the tank.
AC