Originally Posted by Linctex
Originally Posted by Trav
How so, my water pressure is 50 psi.
A water filters sees 100% filter pressure differential - since the outlet is atmospheric
A gear driven positive displacement oil pump will push oil in, through over, or around any filter media.
The filter media won't slow it down - - it either keeps up with the flow, or it fails (holes/tears)
Just playing the devils advocate but my whole house filter is in line 1" in and out so it maintains 50 psi at the filter at all times but as the filter gets dirty flow will reduce because of no bypass valve.
Originally Posted by ZeeOSix
Originally Posted by Linctex
Originally Posted by Trav
How so, my water pressure is 50 psi.
A water filters sees 100% filter pressure differential - since the outlet is atmospheric.
True ... and to add, if a filter's outlet was to the atmosphere, the PD oil pump would only generate a few PSI on it's outlet to force all the oil through the filter. If the filter's flow restriction increased by 5 PSI, then the PD pump would just increase it's output pressure by 5 PSI to keep the same flow. PD pumps just keep forcing the same volume until the resistance gets to a point where the pressure relief valve starts shunting oil away from the pump's output.
A PD pump does in fact outlet to atmosphere after going through the various restrictions in the engine and drain back into the sump. Like the house system its only the restrictions in the system that allow it to build pressure.