Oberdorfer # 401H Bronze Rubber Impeller Clutch Pump manual

The Oberdorfer 401H is a Bronze Flexible Impeller Clutch Pump, with manual Clutch, with a Neoprene Impeller, Buna-N Mechanical Seal, Stainless Steel shaft, 1 inch FNPT by 1 inch FNPT Ports, replacement pump end only without a Motor. This bronze pump is corrosion resistant, is constructed from marine quality bronze and stainless steel for ruggedness and reliability, and features a high chrome nickel stainless steel shaft. Other features of this pump are two sealed extra capacity ball bearings that are spaced for maximum load ability with teflon barrier seals that protect the ball bearings, and a shaft slinger that also provides additional bearing protection. This Pump has one moving part - a tough, long-lived, wear-resistant flexible impeller lubricated by the liquid being pumped. No metal-to-metal pumping action - no gears to jam, clog or become noisy. These pumps are designed to be fully serviceable and after long use can be restored to like new condition, avoiding complete pump replacement. The impeller and cam are easily replaced. The Flexible Impeller in this pump generates high rubbing friction unless lubricated by the liquid being pumped. A lack of liquid will cause the impeller to degrade rapidly. On initial start-up pump must be primed to prevent dry-running of the impeller. This pump is self-priming, and will self-prime at low or high speeds. It will pump instantly, and a suction lift of 15 feet is possible when impeller is wet and pump fully primed. Suction lines must be air tight in order for pump to self prime. The Temperature limits for the Neoprene impeller in this pump is 45 degrees F to 180 degrees F ( 7 degrees C to 82 degrees C). Pumping colder water than 45 degrees F will shorten the impeller life.