Laing 303 series recirc pumps provide the low flow circulation required for hot water recirculation systems. Laing’s low flow design ensures quite efficient system operation.  Available with ½” threaded or ½” sweat connections.  Optional features include built-in 24 hour timer, built-in adjustable thermostatic control and 6 foot power cord.  The 303 series pump is suitable for systems up to 250 feet in total length (supply + return).