RD & RS SERIES® (ROTO PRIME) (Priming Assisted (Dry Prime) Pumps)

Roto Prime® self-priming centrifugal pumps are specifically designed for pumping petroleum products, petrochemicals and solvents. They are available as straight centrifugal pumps or with the exclusive Roto Prime design. This design incorporates a variable capacity vane pump that quickly and automatically evacuates air and vapor, making them ideal for off loading transports and stripping hoses.

Specifications

Size2" (50 mm), 3" (80 mm), 4" (100 mm), 5" (125 mm)
Max Capacity1460 GPM (92 lps)
Max Head390' (119 m)
Max Solids0-1/2" (13 mm)
Max Temperature160 F (71 C)
Materials of ConstructionCast Steel, Ductile Iron
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MODELS: 

RD2A31-B ; RD2A31-BAR ; RS2A31-B ; RS2A31-BAR ; RS2A32-B ; RS2A32-BAR ; RD3A31-B ; RD3A31-BAR ; RD3A32-B ; RD3A32-BAR ; RS3A31-B ; RS3A31-BAR ; RS3A32-B ; RS3A32-BAR ; RD4A31-B ; RD4A31-BAR ; RD4A32-B ;  RD4A32-BAR ; RS5A31-B ; RS5A31-BAR ; RS5A32-B ; RS5A32-BAR 

RD & RS Series (Roto Prime)  Self-Priming Centrifugal Pumps

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.

RESOURCES

Roto-Prime Petroleum Pump Brochure

MODELS

ItemSizeCasingImpeller / RotorDriveFlangeSeal
RD2A31-B3 x 2Ductile IronAluminumBasicASACarbon/Ni-Resist
RD2A31-BAR3 x 2Ductile IronAluminumBasicASACarbon/Ni-Resist
RS2A31-B3 x 2Ductile IronAluminumBasicASACarbon/Ni-Resist
RS2A31-BAR3 x 2Ductile IronAluminumBasicASACarbon/Ni-Resist
RS2A32-B3 x 2Cast SteelAluminumBasicASACarbon/Ni-Resist
RS2A32-BAR3 x 2Cast SteelAluminumBasicASACarbon/Ni-Resist
RD3A31-B4 x 3Ductile IronAluminumBasicASACarbon/Ni-Resist
RD3A31-BAR4 x 3Ductile IronAluminumBasicASACarbon/Ni-Resist
RD3A32-B4 x 3Cast SteelAluminumBasicASACarbon/Ni-Resist
RD3A32-BAR4 x 3Cast SteelAluminumBasicASACarbon/Ni-Resist
RS3A31-B4 x 3Ductile IronAluminumBasicASACarbon/Ni-Resist
RS3A31-BAR4 x 3Ductile IronAluminumBasicASACarbon/Ni-Resist
RS3A32-B4 x 3Cast SteelAluminumBasicASACarbon/Ni-Resist
RS3A32-BAR4 x 3Cast SteelAluminumBasicASACarbon/Ni-Resist
RD4A31-B6 x 4Ductile IronAluminumBasicASACarbon/Ni-Resist
RD4A31-BAR6 x 4Ductile IronAluminumBasicASACarbon/Ni-Resist
RD4A32-B6 x 4Cast SteelAluminumBasicASACarbon/Ni-Resist
RD4A32-BAR6 x 4Cast SteelAluminumBasicASACarbon/Ni-Resist
RS5A31-B6 x 5Ductile IronAluminumBasicASACarbon/Ni-Resist
RS5A31-BAR6 x 5Ductile IronAluminumBasicASACarbon/Ni-Resist
RS5A32-B6 x 5Cast SteelAluminumBasicASACarbon/Ni-Resist
RS5A32-BAR6 x 5Cast SteelAluminumBasicASACarbon/Ni-Resist