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Gorman Rupp

Roto-Prime pumps

PRIMING ASSISTED CENTRIFUGAL PUMPS

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.

Gorman Rupp Roto-Prime pumps typical applications

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Gorman Rupp Roto-Prime pumps benefits

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 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.

How it works

Performance Range

Dimensions

Sizes

3", 6"

Max Capacity

1460 GPM (92.1 lps)

Max Head

390’ (118.9 m)

Max Operating Speed

RS Series (single volute) 1750 rpm, RD Series (double volute) 3450 rpm

Materials

Aluminum Impeller, Ductile Iron or Cast Steel Housing, Steel or Stainless Steel Shaft, Fluorocarbon Mechanical Shaft Seal*

Roto-Prime

Need a data Sheet?

Call Hydromarque on +44(0)1733 370545 or click the link below and contact one of the team for a data sheet on the Gorman Rupp Roto-Prime pumps.

Roto-Prime

Parts list

Call Hydromarque on +44(0)1733 370545 or click the link below and contact one of the team for a parts list on the Gorman Rupp Roto-Prime pumps.

Roto-Prime

Operations & Maintenance Manual

Call Hydromarque on +44(0)1733 370545 or click the link below and contact one of the team for a O&M Manual on the Gorman Rupp Roto-Prime pumps.

Want to know about the Manufacturer?

Take a look at the history and company of Gorman Rupp along with the most popular Gorman Rupp pumps we sell.

Request a quote today

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