Hydrostatic Relief Valve - Bronze - 2 Inch Threaded pool-dimensions_20x36 this algae brush has a

this algae brush has a metal back and will withstand the most rigorous service schedule

This Stenner chemical pump #85MFL3A4SUAA provides reliable chemical feeding for your swimming pool

And this system will control one pump and one blower at 115 volts

This is a PVC Schedule 80 Coupling with Slip x Slip fitting connections that measure 8 Inch

Hydrostatic Relief Valve - Bronze - 2 Inch Threaded pool-dimensions_20x36 this algae brush has aThis is a 2 inch threaded Bronze Hydrostatic Relief Valve with stainless steel spring. This spring loaded relief valve is made of corrosion resistant bronze and fits 2 inch threaded pipe. Seal is neoprene. Replacing your hydrostatic relief valve after you drain your pool is highly recommended.