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  Home > Oberdorfer Pumps > CC Bronze (Pump Only) >

Oberdorfer Gear Pump Model# N994S15
Oberdorfer Gear Pump Model# N994S15
 
List Price: $889.00
Our Price: $799.10
You save $89.90!


Product Code: N994S15

Description
 
Oberdorfer Gear Pump Model# N994S15

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 back pressure in the discharge line. Shaft speed and flow are directly proportional.


FEATURES

  • Bronze Construction with Stainless Steel Shafts
  • Helical gears for quiet operation
  • Easy Field Assembly to Motors
  • Self-Lubricating Carbon Bearings
  • O-ring seal for maximum leak protection
  • For clutch driven version, see N994-38
  • Lip or Mechanical Seal
  • For Danfoss hydrolic motor driven pump units

DRIVE

Close coupled pumps are mounted directly to the electric motor by means of a suitable adapter bracket. The pump drive shaft is connected to the motor shaft by a flexible coupling.

LIQUIDS & TEMPERATURES

These 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. 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.

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 built-in strainer) is recommended at the beginning of the suction line. For a first start-up, 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 size should be at least one size or two sizes larger than the pump inlet port.

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