Casing:
Cast iron volute type designed to produce a smooth flow with gradual changes
in velocity. It is split along the
centre line facilitating easy access to inspect or withdraw the rotating
assembly without disturbing the pipe work.
Casing wear
rings:
All pumps fitted with easily replaceable wear rings.
Impeller:
The impeller is of the shrouded double entry type, manufactured in bronze or
cast iron. After machining, the
impeller is hand finished and statically balanced with the pump shaft to ensure
smooth running of the rotating parts.
Shaft:
The shaft is made of High-Tensile mild steel, turned and ground, depending
on the application.
Shaft Sleeves:
Renewable shaft sleeves are fitted as standard to the D.E.S.C. range. Model K and KL can have these fitted as an extra.
Bearings:
Model K and KL have self-aligning ball bearings fitted. Model D.E.S.C. has heavy-duty ball and roller bearings. All bearings are enclosed and grease packed in housings bolted to the
pump casing.
Stuffing Box:
Stuffing boxes may be of the conventional soft-packed type with adjustable
glands arranged for either water or grease sealing. Alternatively, if preferred, mechanical seals can be fitted.
General:
The materials mentioned in the Specification are those supplied for pumps
dealing with clean water. There is
a choice of materials for different applications.
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