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Description
  • BrandFoster
Pressures to 150 psi (10.34 bar)
Flow Capacity to 300 gpm (1,364 lpm)
Viscosities to 100,000 SSU
The six-vane Series RR pump is highly efficient when pumping low to medium viscosity liquids. At speed, the hydraulic force behind each vane combines with centrifugal force to maintain a constant vane-to-liner seal which provides sustained volumetric efficiency through self-adjustment for wear.
Series RR non-metal fitted pumps are inherently self-lubricating, and the total area of contact between moving parts is significantly smaller which lowers mechanical friction losses. With a shorter, simpler flow path; simpler parts and larger chamber cause less shear or turbulence, this lowers hydraulic friction and shear loses. Liquid slip losses are lower due to dynamic vane actuation and self-adjustment for wear. Pump speeds are lower due to high volumetric displacement. Volumetric efficiency losses are lower due to self-adjustment of vanes.
The vanes in Series RR are self-adjusting for wear. This allows the pump to maintain volumetric efficiency while wear seriously reduces capacity of other rotary pumps. A foster pump does not require replacement, increased speed, and power, or more frequent repairs to maintain capacity.
Maintenance-In-Place makes reconditioning easy and economical. New vanes are often all that’s needed to be replaced. Even extensive wear is no problem. All wear parts can be replaced without dismounting the pump or disconnecting system piping. No specials tools or skills are needed.
Series RR can be equipped with a Pressure Limiting Valve (PLV), which an adjustable spring-loaded poppet valve is designed to freely bypass full pump flow if the pump discharge line is closed or restricted within viscosity limits. The internal bypass PLV returns discharged liquid to the pump inlet for automatic bypass protection with no need for external piping. The convertible PLV permits selection of either internal bypass or return to source through external piping, depending on which of two valve discharge ports is closed off.
Series RR has a flow rate up to 300 gpm (1364 lpm) and a pressure rate of 150 psi (10.34 bar).
Series RR has two standards and one special alloy, from cast iron, ductile iron, and 316ss that are available.
NOTE: Due to the low viscosity of Series RR, please consult your local Foster Rep or our factory for specific recommendations on individual pump models, sizes, types, and materials.
Features
Maintenance-In-Place
Self-Adjusting For Wear
Long Service Life
Viscosities to 100,000 SSU
Photos
  • FOSTER Series RR
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