Impeller:
Statically
& dynamically balanced
Impeller matched to casing for high efficiency
and low NPSH. Fully open, has partial shrouds
for maximum vane support without high thrust
inherent in closed impellers. Stuffing box pressure,
reduced to avoid entrance of solids by
back pump-out vanes. Large smoothly contoured
flow passages combine best slurry and solid
handling ability. Impeller is locked on shaft
with impeller locknut and are sealed by PTFE
gasket. Our state of art casting methods provide
smoothest possible surfaces for highest efficiency.
Stuffing
box cover:
Encloses back of causing, contains stuffing
box chamber. Cover is fastened to frame or adopter
so that a spare back pull-out assembly can
be stocked completely assembled. For high
temperature services, a jacketed cooling stuffing box
chamber can be supplied. A Jacketed
arrangement
can also be used for heating viscous / high
freezing point liquids.
Packed box consists of five packing rings & a lantern
ring. Quench gland with water tapes and an auxiliary
packing ring is standard. Gland is spilt
for easy removal. Tapped openings to lantern
ring permit IN & OUT
sealing, with external flushing or lubrication as
required. Stuffing box is completely machined
for mechanical seal installation, either originally
or as a field conversion. Inside, outside, unbalanced,
balanced, single, double or tandem seals with
any required gland, throat bushing, throttle
bushing and flushing lines furnished to meet
individual sealing problems. Gland completely
confines stationary mating ring gasket.
Bearing
Frame:
Sturdy cast iron construction provides rigid
bearing alignment and shaft support. Contains
large oil reservoir with water jacket. Oil
level maintained by constant level oilier with
water jacket. Oil seals on each end and oil
breather fully protect oil from contamination
while allowing for expansion or contraction
of air caused by ambient 0 temperature change.
To handle liquids above 175 C, cast integral
cooling chamber is designed for 600 kpa working
pressure or 900 kpa test pressure.
Shaft:
A single piece shaft is designed for 0.05 mm
maximum deflection at stuffing box face. All
critical surfaces ground to less than 0.8 micron.
Shaft
Sleeve:
Renewable shaft sleeve is positive driven, hook type,
with one end free to expand with temperature
variations, PTFE gasket prevents leakage under
sleeve. Sleeve permits application of inside
balanced mechanical seals where required.
Bearings: Onboard bearing is pressed on shaft and is free
to float axially in frame-carries radial load
only. Outboard bearing is shouldered and locked
on shaft with locknut, washer & in bearing
housing to carry radial and any unbalanced thrust
load. All bearing fits are precision bored.
Inboard bearing is single row, deep groove.
Outboard bearing is double row, deep groove
angular contact. Both bearing are sized for
two year minimum life.
Base
Plate:
Heavy duty MS Channel base plate with large
holes. Only three sizes of base plates
accommodate
all pumps sizes & all applicable IS or IEC
frame size motors.
Coupling:
A standard spacer type coupling is furnished
to take full advantage of the back pull-out
feature. Factory selected coupling from leading
manufacturers are supplied unless otherwise
specified.
Specification:
Based on ANSI B73.1 |
