Ultra Quiet Shurflo Motorhome Water Pump 3 GPM 55 PSI RV Demand Pump (Replaces Shurflo Model 2088-422-444) REVOLUTION AUTO DEMAND PUMP REPLACES SHURFLO STANDARD MODEL# 2088-422-444 Quiet and Reliable Reduced Cycling with Patent-Pending Reaction Flow Technology 3 GPM and 55 PSI High Performance Powerful 7.5 AMP Motor with Automatic Thermal Overload Protection Runs Dry Without Damage Built-in Check Valve Prevents Backflow