Allis
Chalmers PWO Pump Range
Tuff P Series
Paper, Pulp and Process Pumps
The old Allis
Chalmers PWO paper / pulp and process pump range was a derivative
of the original CW range
and, as such, had a tangential discharge nozzle and had a commonality
of drive end parts. There were two distinct bearing frame styles
within the USA design ~ these being the F8 and F9 units. The F8
was more or less the same as the F6 bearing frames used on the CW
type pumps, whilst the F9 was more akin to the frame used on the
larger CSO style pumps. Very confusing for the uninitiated and less
conversant among us. To add even more confusion to the above, the
Allis Chalmers Canadian operation utilised the basic hydraulic design
of the older US style PWO in order to produce a more modern and
commonly requested “European Style” PWO pump; with this
having a top centreline discharge nozzle and a completely redesigned
drive end. Over and above the design changes, the Canadian designs
altered the pump size structure slightly and produced units that
did not derive solely from the US designs.
The pump sizing
will become clear later and it should be noted that although hydraulic
design was similar in both the US and Canadian pumps, the parts
generally did not interchange; although impellers in some sizes
can be made to fit.
As previously
and commonly stated within this website, neither Allis
Chalmers Pumps nor Tuff
Pumps are manufacturers of the original Allis Chalmers pumps
and/or parts. Tuff Pumps clearly manufactures “equivalent”
and/or “interchangeable” pumps and parts that are 100%
suitable for and compatible with the old Allis Chalmers models and,
with this in mind, Tuff Pumps can supply current end users with
its new Tuff
Pumps P Series pumps and parts; noting that the current P
Series pump range is equivalent and interchangeable with the
younger “Canadian Style” of PWO.
However, should an end user require the old “US Style”
of PWO equivalent, Tuff Pumps can oblige and will happily do so
by utilising and/or altering its H
Series pumps and/or parts it commonly keeps in stock.
The P
Series range of pumps; as manufactured and supplied by Tuff
Pumps, is available in a wide variety of material combinations;
these being hydraulic ends in all ductile iron; ductile iron (casings
and stuffing box covers) with 316SS or 317SS or Duplex Stainless
Steel impellers and suction wear plates; or all 316SS or 317SS or
Duplex Stainless Steel (CD4Mcu or 20SS) construction. All bearing
frames and bearing housings are in SG/Ductile Iron, shafts in SAE
1045 Steel or 316SS or Duplex Stainless Steel, shaft sleeves in
hardened or non-hardened Stainless or Duplex Stainless Steel, and
bearing frames can be supplied with grease or oil mist lubrication
systems.
Pump
Sizes
Canadian
Style Construction
Top Centreline Discharge Nozzle:
Group 1 Bearing
Frame:
P6/3-14 = 6x3x14 PWO
P6/4-14 = 6x4x14 PWO
Group 2 Bearing
Frame:
P8/4-17 = 8x4x17 PWO
P8/5-17 = 8x5x17 PWO
P8/6-17 = 8x6x17 PWO
P10/8-17 = 10x8x17 PWO
P12/10-17 = 12x10x17 PWO
Group 3 Bearing
Frame:
P8/6-21 = 8x6x21 PWO
P10/8-21 = 10x8x21 PWO
P12/10-21 = 12x10x21 PWO
P14/12-21 = 14x12x21 PWO
P16/14-21 = 16x14x21 PWO
USA
Style Construction
Tangential Discharge Nozzle:
Group 1 Bearing
Frame:
P4/3-12 = 4x3x11.5 PWO
P5/4-12 = 5x4x11.5 PWO
Group 2 Bearing
Frame:
P8/4-17 = 8x4x17 PWO
P8/5-17 = 8x5x17 PWO
P8/6-17 = 8x6x17 PWO
P10/8-17 = 10x8x17 PWO
P12/10-17 = 12x10x17 PWO
Group 3 Bearing
Frame:
P8/6-21 = 8x6x21 PWO
P10/8-21 = 10x8x21 PWO
P12/10-21 = 12x10x21 PWO
P14/12-21 = 14x12x21 PWO
P16/12-21 = 16x14x21 PWO
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Please
refer to Tuff Pumps and its P
Series range
for further information and PDF literature downloads
Typical
P10/8-17 Pump
equivalent to 10x8x17 PWO
with indirect v-belt drive
Typical P10/8-17 Pump
equivalent to 10x8x17 PWO
with standard direct drive system
Typical
P Series Pump Parts
casings, impellers,
drive end bearing frame
Typical
P12/10-17
equiv. to 12x10x17 PWO
pump with spacer type
coupling and all duplex
stainless steel construction
Typical P8/6-17
equivalent to 8x6x17 PWO
Pump with
150 kW x 1000 rpm engine
and priming tank fitted
Please
refer to Tuff Pumps and its P
Series range
for further information and PDF literature downloads
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