Oberdorfer 109MB Bronze Centrifugal PumpRugged Bronze Construction
A Standard in the Marine Air Conditioning
Extremely Quiet Operation
O-Ring Housing seal eliminates gasket
Teflon Barrier Seal to protect motor bearings
Handles Contaminated Liquids
Discharge port orientation flexibility-8
Mechanical Seal - Carbon/Ceramic
Buna - standard
Viton (S10) optional
Teflon (S11) optional
Pump Heads mount to standard footed
Nema 56J Jet Pump Motors
Shafts: 416 Stainless, Monel, or
316 Passivated Stainless
Multiple motor options available
For Industrial Version - see Model 700 series
The 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.
Viscous liquids with a maximum viscosity of 2000
Saybolt Seconds Universal can be pumped. However,
when pumping viscous liquids as compared with water,
a reduction in flow and pressure occurs and the
required horsepower rate increases.
Liquids heavier than water require additional
horsepower in direct proportion to the increase in specific gravity. Liquids contaminated with small solids or abrasives can be
handled, but a reduction in mechanical seal life must be expected.
This close-coupled pump uses a standard NEMA CFlange Jet Pump Motor with weld-on base and threaded shaft
end to accept the pump impeller. Single phase motors are nonreversible and are wired for the proper pump rotation which is
counter-clockwise looking at the inlet end of the pump. (See the
dimensional drawing on back.) Three phase motors must be
checked out for proper rotation when the pump is installed.
Interchanging of any 2 wires in a 3-phase system will reverse
The pump uses a mechanical type shaft seal with a
Buna N rubber element. It is suitable for water, oils, and some
mild solvents and it is limited to 212o
F and 75 P.S.I. Viton(R)*
seals and Teflon(R)* seals are available for severe solvents and
Oberforfer 109MB-1J26 is commonly used in marine air conditioning systems up to 150,000 BTU. It is equipped with a Monel shaft for corrosion resistance.
Motor: ½ HP 115/230 Volts 60 Hz. Open Drip Proof housing
Inlet Port: 1-1/4” female pipe thread
Outlet Port: 1” female pipe thread
Gallons per hour at 0 feet of head: 4200
Max Head: 44 feet
Replaces Cruisair PH3000BX and Aqua-Air AQPM-30
Note that this pump has a Monel shaft which is much more corrosion resistant in salt water than the more common stainless shafts.