Bronze Rotary Gear Pump 1"

1" Close coupled bronze rotary gear pump with motor. 1.5HP

• Bronze Construction with SS shaft
• Helical gears for quiet operation
• Self-lubricating carbon bearings
• O-ring seal for max. leak protection
• The pump drive shaft is connected to the motor shaft by a flexible coupling 

• GENERAL DESCRIPTION
  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.
  DRIVE ARRANGEMENT
  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 AND TEMPERATURE
  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. The recommended liquid
  temperature range is 32oF to 140oF for longest pump life. If more
  extreme temperature conditions exist, our factory should be consulted.
  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.
  ROTATION AND RELIEF VALVE
  The relief valve is not intended to be a metering or flow control device.
  Its main purpose is to function as a discharge pressure relief when the spring
  tension is exceeded by the discharge pressure. Overheating can occur within
  5-10 minutes if the discharge line is completely shut off for extended
  periods.
  Unless otherwise specified, the pump motor unit is supplied by the
  factory for shaft rotation clockwise from shaf t end. Reversing the motor rotation
  will reverse the “in” and “out” ports and also requires changing the relief
  valve location. The relief valve is always on the discharge side in this pump
  series. The factory pressure setting is 50 PSIG. To increase pressure, turn
  the relief valve adjusting screw in a clockwise direction.
  To reverse single phase motors, find instructions on the inside of the
  junction box cover or on the name plate of the motor.
  Three phase motors are not wired for any particular rotation. They can
  be reversed by interchanging any two (2) wires of the three (3) wire leads.