Estate sale find: Shurflo model 2088-403-444 diaphragm pump.
It is a 12-volt pump with a flow rate of 2.8 GPM (gallons per minute) and a pressure setting of 45 PSI.
The pump is designed for high-flow, moderate-pressure applications and can be used for spraying and fluid transfer.
It is self-priming, can run dry without damage, and has a built-in check valve to prevent backflow. I was told it works .