Water Pressure Regulator - Flush Mount - WhiteEasy to install, easy-clean in-line filter, permanently installed flush mount model and in-line model with brass garden hose fittings that connect dockside water entry and garden hose water hook-up. Reduce high water pressures (up to 100 psi down to 35 psi). Features:Built-in back flow preventerEasy-to-installEasy clean in-line filter