Features of
the Tuff Pumps R Series
Standardization:
With 8 horizontal pump sizes built around 4 power frames (designated as
pump groups), the R Series maximizes bareshaft pump and spare parts interchangeability,
and additionally reduces inventory requirements. In addition to the horizontal
configuration, the RV Series provides a vertical cantilever (tank type
mounting) option that covers all of the 8 available pump sizes. Each vertical
cantilever pump is tailored to suit customer requirements.
Greater Wear Life:
By utilizing superior pressure moulded, steel (skeleton) reinforced elastomer
and/or polymeric materials; from natural rubber through to high grade
synthetic rubbers and/or polymers (such as urethane), extra thick material
sections, and sacrificial wear liners within high grade ductile iron casing
volutes, the R Series maximizes wear life and reduces life-time costs.
Where specifically requested or deemed a process necessity, the R Series
can be supplied with polyurethane impellers and/or liners in place of
or in conjunction with rubber lined parts. All pump fasteners are in 304
or 316SS unless otherwise specified.
Ease of Maintenance:
Simplified and faster maintenance is facilitated by the incorporation
of a half-casing back pullout design within the entire R Series pump range
~ with the ability to remove the complete back gland-half pump casing
and bearing frame/rotating assembly without disturbing the suction-half
casing, suction and discharge pipework, or pump driver.
Variable Speed:
As impellers cannot be cut to size, the R Series is recommended to be
directly coupled to a variable speed driver or gearbox drive system, and
is even better suited to being v-belt driven from a fixed speed motor.
Compact Drive Design:
With v-belt drives being highly recommend for speed variation ~ among
others, the R Series additionally allows for more compact, space saving
configurations by incorporating overhead motor mounting plate supports
within the bearing frame, thereby allowing drive motors to be directly
mounted above the bearing assembly.
High Performance:
All R Series pumps have been designed with volutes and impellers that
optimize erosive/corrosive solids handling abilities with high efficiencies
and lower power costs. Impeller adjustment is facilitated by a lockable
rotating element jacking screw arrangement on the bearing frame that enables
the end user to counter normal suction liner/impeller wear and improve/restore
pump efficiency whilst leaving the complete pump in situ.
High Pressure:
Specific sizes of the R Series pump range ~ with details available upon
request, can be furnished with special high pressure "extra thick"
casings for particular use on relatively high pressure, series pumping
applications.
Variable Discharge Nozzle Positions:
Having separate casing feet, the R Series pump casings can be rotated
through 360 degrees, thereby providing the end user with up to 5 (standard)
discharge nozzle positions and maximization/optimization of discharge
pipework.
High Shaft & Bearing Strength:
Over and above wear part strengths and planned longevity of life, the
R Series range of pumps has taken this design philosophy farther, by incorporating
oversized high tensile or stainless steel alloy shafts and similarly oversized
bearings; with the outboard, drive end bearing designed to take a combination
of high radial and axial loads ~ such as those imposed by the v-belt drive
system and impeller (thrust) action, whilst the inboard, impeller end
bearing is designed as a floating bearing and more suited to withstanding
the main radial loads imposed by the impeller.
Maximum Bearing Protection:
All R Series pump bearings are double protected against the ingress of
liquids and/or solid particles by an effective combination of outer deflectors
or labyrinth seals and inner double lip oil or grease seals with other,
more complex options available should the duty and/or application necessitate
same. Bearing condition and general pump health can be remotely analyzed
by the incorporation of optional electronic bearing sensors.
Lubrication:
The R Series pump range can be supplied with oil bath, oil mist, or grease
lubricated bearings; with the standard default system being oil mist.
Extra large oil sight glasses or constant oil levelers are fitted as standard,
with electronic oil detectors available as an optional extra. Bearing
housing oil cooling systems are also available upon request and/or should
the application operating temperature dictate necessary.
Rotodynamic Sealing:
The R Series pump range is fitted ~ as standard ~ with 316SS gland plates
and high grade GFO packing, however, should the application and/or customer
require otherwise, the R Series pump range can be fitted with the following
options:-
- Single or Double Mechanical Seals
- Single or Double Dynamic Seals (otherwise known as Expellers)
- Auxiliary/External Sealing Systems
- Oversized Parallel and Oversized Tapered Stuffing Boxes for Mechanical
Seals ~ providing superior cooling/lubrication and/or self-venting.
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