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The RS Series
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The RS is our new process duty, horizontal ring section multi-stage pump. Designed
for moderate to high pressure pumping, the RS is available in five basic sizes with
overall performance to 1,000 HP. The RS is offered with ANSI 300 lb. inlet flanges
and ANSI 600 or 900 lb. discharge flanges, depending on the pressures and number
of stages involved. Either way, hydraulic performance extends to 1,400 GPM and 3,400
ft. TDH, which surpasses that of all comparable pump types and makes it ideally
suited for the most demanding industrial and process services. The RS design incorporates
a product lubricated radial bearing as standard. The thrust bearings are two matched
angular contact ball bearings located at the inboard (suction) end of the pump with
a product lubricated, antimony impregnated carbon sleeve type radial bearing at
the outboard (discharge) end. For units with an optional outboard mechanical seal,
the angular contact ball bearings move to the outboard end and a ball bearing is
added at the inboard end for handling any radial loads.
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The RS also offers the choice of either grease or oil lubricated thrust bearings.
The greased bearings are the regreasable type, and the oil lubricated bearings include
a further option of external water cooling for high temperature operation. Many
other options and arrangements, such as turbine and magnetic drive units, are also
available. These options, together with all the value-added features shown on the
following pages, offer the benefits of:
- maximum safety
- maximum installation flexibility
- maximum fluid compatibility
- higher efficiencies
- longer component life
- minimal down time
that together all work to lower your total costs of ownership. |
Hydraulics
- Flows to 1,400 US GPM (320 m3/hr)
- Heads to 3,400 feet (1,000 m)
- Pressures to 1,500 psig (100 bar)
- Temperatures from -20ûF to 410ûF (-30ûC to 210ûC)
- Speeds to 3,500 RPM
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Applications
- Agriculture irrigation
- Boiler feed
- Chemical and light hydrocarbon transfer
- Coating and surface treatment
- Desalination and reverse osmosis
- High rise building sprinklers
- Large vehicle washers
- Paper mill shower water
- Pressure boosting systems
- Sanitary wash down services
- Ski resort snowmaking systems
- Rotating equipment lube and seal oil supply
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Why an RS?
Reasons for selecting an RS pump over a single impeller pump for higher head applications are:
- the peripheral (tip) speed required with a single impeller pump can exceed the structural limitations of the impeller material
- the radial and axial loading on a single impeller pump can be excessive
- the impeller of a single stage pump is very difficult to cast, given the large D2/B2 ratio of diameter to thickness required
- the diameter required with a single impeller pump would be very difficult to balance
- the NPSH required with a high speed, single impeller pump will be significantly higher than that of a multi-stage pump
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Standard Material
Casing.....................Ductile iron or CD4MCu
Impeller/Diffuser .....Cast iron or CD4MCu
Shaft.......................416 SS or 17-4 PH SS
Sleeve Bearing .......Antimony impregnated carbon
Wear Rings ............Ductile iron or antimony/carbon
Mechanical Data
Rotation ............................ Clockwise as standard
Flange Positions.................. 3 positions for each
Suction Flange ................... 300 lb. ANSI R.F.
Discharge Flange ............... 600 or 900 lb. ANSI R.F.
Radial Bearing L10 Life ..... 100,000 hours
Thrust Bearing L10 Life...... 50,000 hours
Number of Stages
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