170DM5 Double Head Adjustable Flow Pump - 25 PSI 170 GPD 120 Volt - 3/8 Inch Standard Tubing state_District of Columbia a chemical tank

a chemical tank

sequential backwashing

This Virginia and West Virginia Warning No Lifeguard On Duty (14 Years And Under) Sign measures 24 x 18 inches

and is designed to warn patrons that children under age 15 must be supervised and solo swimming is not allowed

and reliable readings of Free Chlorine concentration in pool water

170DM5 Double Head Adjustable Flow Pump - 25 PSI 170 GPD 120 Volt - 3/8 Inch Standard Tubing state_District of Columbia a chemical tankThis Stenner chemical pump #170JL5A3STAA provides reliable chemical feeding for your swimming pool. This adjustable flow pump is rated to pump 170 gallons of chemicals per day at 25 PSI. This stenner pump is a great choice for all your chemical needs.