The Salcor Model 3G is for the disinfection of effluent treated to secondary or tertiary standards. The unique Teflon cover keeps the UV lamp from fouling. Salcor Model 3G may be installed in a pump tank or in the ground. Properly installed, the unit is rated NEMA 6P and is capable of operating during short term submergence. The Salcor Model 3G is both UL and cUL certified (US and Canada) under standard 979.