Pump for changing oil in vehicle sump - has check valve in line between lowest point of sump and pump

摘要

The sump or tank (2) which requires to be empties has a connection (1) at its lowest point. The reservoir (2) is connected to tank (7) by a pipe (5), check valve (4) and pump (5). The pump is able to draw the liquid from the sump reservoir through the check valve and discharge it to another tank (7). This enables inaccessible sumps to be emptied without having to operate valves which are inaccessible and facilitate complete emptying due to the connection provided at the optimum position.