Goulds Pumps D5 SOLAR/090B, Bronze Solar Circulator, 12-24 Volts, w/Built-in Ball, Union, Bleeder and Check Valve (1/2" Sweat)

This D5 solar pump can be used for most circulation pump applications without connection to the power grid but with direct connection a photovoltaic panel. It is perfect for single family home thermal solar systems or any circulation pump application where conventional power is not available. The D5 Solar pump comes with an integrated over-temperature safety device which shuts off the pump electronics when reaching temperatures over 230F. When the temperature of the pumped fluid is below 203F the pump will function normally. After reaching a critical temperature 203F the pump will lower its speed automatically in order to avoid a total shutdown. However, if the temperature continues to rise the pump will eventually shut down completely and automatically restart after cooling down.Product Features: Start-up power requires less than 1 WattDirectly connects to P.V. panelEconomic and powerfulECM TechnologyNo conventional shaft bearings or seals eliminating bearing noise and seal leaksEstimated service life exceeds 50,000 hoursSelf-realigning bearing is lubricated and cooled by the mediaEven after prolonged shutdown, the pump will start reliablyAll parts exposed to the fluid are completely corrosion resistantIncludes built-in ball valve, check valve and purge valve