Oberdorfer model # N991-32-S5 - Gear Pump

Oberdorfer # N991-32-S5

Oberdorfer catalog # N991-32-S5, Gear Pump End Only for DC motors (no motor - for close coupled pump and DC motor assembly ) 2 GPM, Viton Lip Shaft Seal, Pump End Only. 3/8" inch NPT Ports.

Product Information :

Applications

Features • Compact design eases installation and use in limited SPACEareas. • Construction is bronze and stainless steel wetted components. • Close tolerance design allows for consistent performance. • SelfLubricating Bearings • Complete Units Available • Slotted Motor Base with Rubber Grommets • Permanent Magnet Rigid Base Motors • 3/8 Ports Applications Compact DC portable units convienient for on site servicing of vehicles, machinery and field equipment. For pumping oil direct from crankcase or oil resevoir, drums, containers, transfer diesel fuel to vehicles, pumping other liquids and chemicals compatible with materials of construction. Pumping viscous oils, SAE 30 or greater, can overload motor. Intermittent use is recommended when pumping viscous oils, especially in cold weather. Service life will be increased substanially if liquid pumped is clean and has lubricity value. These pumps have extremely close tolerances. Fine abrasives like sand, silt or powders in suspension will destroy pumping ability. Liquids compatible with bronze, stainless steel and the Buna lip seal can be pumped. For solvents a Viton lip seal is available. For a VitonR Seal, add S5 to the pump model number. See chemical compatibility table. Temperature extremes are detrimental to service life and should be avoided. Basic metals of construction allow temperature range of 40 to 400F. Standard Buna lip seal has a temperature limit of 250F, while the VIton lip seal will handle up to 300F. Freezing liquid in the pump can deform or damage the pump. SUCTION LIFT As a general rule, the suction lift should be kept at an absolute minimum by placing the pump as close to the liquid source as possible. A gear pump in new condition can lift 20 feet of water in the suction line. A foot valve preferably with builtin strainer is recommended at the beginning of the suction line. For a first startup, the pump should be primed to avoid dry running. MInimum size of the suction pipe is the size of the pump inlet port. For longer suction lines over 3 feet or for viscous liquids, the pipe should be at least one size or two sizes larger than the pump inlet port