Copper-Fin II Models CP(N/L) 401-751 Pump 1/4 HP voltage_220/440V Three Phase This is a Pentair High

This is a Pentair High Flow Manual Air Relief Valve replacement which fits the Pentair Clean and Clear Plus cartridge filter

and debris from your swimming pool

This is meaningful because those same products (many of which are phosphate-based) would directly conflict with phosphate removal efforts

This is a Stenner S3QP Pump Head #4 replacement with Versilon tube and rated for 25 PSI

H-Series CZ and HM2 model pool heaters

Copper-Fin II Models CP(N/L) 401-751 Pump 1/4 HP voltage_220/440V Three Phase This is a Pentair HighThis is a Lochinvar 1 4 HP bronze pump. It is used with Copper Fin II Models CP(N L) 401 751 Gas Heaters and CS(N L) 495 745 Pool Heaters.