Oberdorfer Pumps- Thomas Industries

Pump housings and gears are made of top quality bronze, shafts are stainless steel 303. Bearings are made of high performance carbon-graphite material selected for wear resistance and long service life. Gear pumps are positive displacement pumps. Each shaft revolution displaces a definite amount of liquid relatively unaffected by the backpressure in the discharge line. Shaft speed and flow are directly proportional. FEATURESCompact design eases installation and use in limited space areas.No adapter needed, pump mounts directly to motor.Rugged Commercial AC MotorsAutomatic Thermal Overload ProtectionOpen Drip Proof* - Modified NEMA 48 FrameWelded Rigid Base - Continuous Duty115 VAC 60 HZ - Reversible13 HP (F41) - 12 HP (J16)DRIVEClose coupled pumps are mounted directly to the electric motor. The pump drive shaft is connected to the motor shaft by a flexible coupling. LIQUIDS & TEMPERATURESThese pumps are suitable for all liquids that are compatible with bronze. Most common liquids are water, oil, and mild chemicals in the pH-range of 4 to 11. Viscous liquids require reduced shaft speeds of 1150 RPM or lower and will require a different motor than what is listed. Consult factory. Liquids containing solids, abrasives, powders or paint pigments are definitely not recommended for gear pumps. If abrasives are unavoidable, use a very low shaft speed. See price book for the recommended liquid temperature range of lip and mechanical seals. Freezing of water-filled pumps can cause damage and must be avoided. Oils at low temperatures are very viscous requiring a lower speed or extra power.

This close-coupled pump uses a standard NEMA C-Flange Jet Pump Motor with weld-on base and threaded shaft end to accept the pump impeller. Single phase motors are non-reversible and are wired for the proper pump rotation which is counter-clockwise looking at inlet end of pump. See the dimensional drawing. Three phase motors must be checked out for proper rotation when pump is installed. Interchanging of any 2 wires in a 3-phase system will reverse motor rotation. The pump uses a mechanical type shaft seal with a Nitrile rubber element. It is limited to 212o F. Fluoroelastomer seals and polytetrafluoroethylene (PTFE) seals are available for severe solvents, difficult chemicals, and elevated temperatures. FEATURESRugged bronze constructionA standard in the marine air conditioning industryExtremely quiet operationO-ring housing seal eliminates gasket problemsPolytetrafluoroethylene (PTFE) barrier seal to protect motor bearingsHandles contaminated liquidsDischarge port orientation flexibility - 8 positionsMechanical seal - carbonceramic, Nitrile - standard, Fluoroelastomer (S10) optional Polytetrafluoroethylene (PTFE) (S11)Pump heads mount to standard footed NEMA 56J jet pump motorsShafts: 416 Stainless, Nickel Alloy or 316 Passivated StainlessMultiple motor options availableDRIVEThis close-coupled pump uses a standard NEMA C-Flange Jet Pump Motor with weld-on base and threaded shaft end to accept the pump impeller. Multiple motor options are available. LIQUIDS & TEMPERATURESThe special pump alloys used provide corrosion resistance to many liquids including water, water solutions, and a wide range of commercial chemicals. Questions as to the chemical compatibility of special liquids should be referred to the factory.