Made to provide trouble-free performance with any liq­uid. Pumps will run dry without seal problems. Pump and Lucite Expansion Tank are factory assembled with 50% Ethylene Glycol and pressur­ized to 125 PSI. Pumps are straight or self-priming and available in pedestal, clutch or electric motor drive. Cast iron construction with sealed bearings and double viton me­chan­ical pressure seal. Pumps should operate at 3600 RPM.