To stop the air locks i fitted the metal tank outlet with a tap on.
When waters low and moving the van, just switch the pump off, shut off the tank tap and jobs a good un.
You get air locks and the pump draws in air as when the water sloshes about the water level drops below the outlet level.
By shutting the tap off on the tank outlet it prevents the water from leaving the pipe leading to the pump and being replaced with air.
When waters low and moving the van, just switch the pump off, shut off the tank tap and jobs a good un.
You get air locks and the pump draws in air as when the water sloshes about the water level drops below the outlet level.
By shutting the tap off on the tank outlet it prevents the water from leaving the pipe leading to the pump and being replaced with air.