Millennium Systems International

Gorman-Rupp Pumps
Roto-Prime Pumps

Gorman Rupp - Roto-Prime Pumps

Other Gorman-Rupp Pumps

 

Pump Specifications  
Size 3" x 2", 4" x 3", 6" x 4", 6" x 5" (75 mm x 50 mm, 100 mm x 75 mm, 150 mm x 100 mm, 150 mm x 125 mm)
Max Capacity 1460 gpm (92 lps)
Max Head 390' (119 m)
Seal Elastomer Viton®, Teflon®
Materials of
Construction
Ductile Iron, Cast Steel

  Pump Features

Automatic, Positive Pumping
Whenever air or vapor is present at the start of the pumping operation – or when there is a loss of suction because of air or vapor during pumping – the priming pump automatically moves air and vapor from the suction line to the discharge line.

 

Once the flowing liquid from the centrifugal portion of the pump builds up sufficient pressure in the discharge system, this pressure backs up through a tube to act on the bottom of the priming pump’s moveable slide block, placing it in a neutral position. Under these conditions the priming pump no longer evacuates air, but merely circulates a small amount of liquid.

 

Roto-Prime Pumps are actually two pumps in one. The small, powerful vane-type pump within the main centrifugal housing can prime an absolutely dry 4" (100 mm) line with zero back pressure in approximately two seconds per foot without initial manual priming. And this priming pump will evacuate suction lines with back pressures up to 8 pounds per square inch.

Full Priming
With air or vapor in the lines, pressure of the spring on top of the movable slide holds the priming pump in full pumping position.
Partial Priming
As the pump evacuates air and vapor from the lines, liquid pressure builds up on the underside of this slide, moving it upward toward neutral.
Neutral
When all air and vapor are removed, liquid pressure equalizes spring pressure and the pump automatically slides into neutral…where it remains until air and vapor again appear in the system.

 

 

Contact Us

Millennium Systems International, LLC
Baltimore, Maryland
Ph. 443-838-9550
Fx. 443-836-0222
Email
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