Oberdorfer OBN992M-J07 Bronze Gear Pump

The Oberdorfer N992M-J07 is a comprehensive unit comprising a Bronze Gear Pump and a motor. The pump features Bronze Gears, a Buna Lip Seal, and 3/8 Inch NPT by 3/8 Inch NPT Ports. It is closely integrated with a 1/2 Horsepower, 1725 RPM, 115/230 Volts, Single Phase, ODP (Open Drip Proof) Motor.

This gear pump is versatile, capable of handling a wide range of common liquids, including water, oil, and mildly compatible chemicals within a pH range of 4-10, as well as diesel fuel. To maintain optimal performance, it's crucial to ensure that the liquids pumped are clean and free of abrasives, as abrasive substances can lead to wear and reduced efficiency. Gear pumps operate as positive displacement pumps, meaning each shaft revolution displaces a fixed volume of liquid, and this displacement remains relatively unaffected by the back pressure in the discharge line. The relationship between shaft speed and flow is directly proportional, with increased speed resulting in higher flow rates, and power demand (horsepower) increasing with both shaft speed and discharge pressure.

This pump is self-priming, with a maximum suction lift of 20 feet; however, it's recommended to keep the suction line as short as possible. Additionally, a relief valve is essential to protect the pump and the system in case the discharge line becomes blocked or closed. The pump is equipped with a Buna-N lip seal with a metal case, which is spring-energized and of the single lip type, providing minimal friction drag and reliable sealing. These lip seals can be easily replaced by pressing out the old seal and inserting a new one. The pump incorporates an O-ring cover seal for maximum leak protection. The bearings in the pump are made of high-performance carbon-graphite material, selected for wear resistance and extended service life, requiring no lubrication.

Recommended discharge pressure limits for this pump are 100 PSI for water and non-lubricants, and 150 PSI for oil and other lubricants. Maintaining lower pressure is advisable for maximizing service life, as high pressure can accelerate wear. The maximum allowable shaft speed is 1750 RPM. Viscous liquids may require lower pump speeds, and the maximum viscosity limit is up to 50,000 SSU. The motor attached to this pump has open drip-proof construction, is suitable for continuous duty operation, and comes with built-in overload protection. The motors are of 48 frame size with NEMA standard mounting flanges, stainless steel shafts, and ball/ball bearing construction.

This pump offers an ideal solution for a wide range of applications, making it well-suited for:

-General Water Service

-Chilled and Hot Water Systems

-HVAC (Heating, Ventilation, and Air Conditioning) Industrial Processes

-Municipal Drinking Water

-Sprinkler Systems

-Irrigation Systems