DURCO MARK 3 ISO FRAME MOUNTED ENGLISH 85392719 06-12
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2.4 Storage
Store the pump in a clean, dry location
away from vibration. Leave piping connection covers
in place to keep dirt and other foreign material out of
pump casing. Turn pump at intervals to prevent
brinelling of the bearings and the seal faces, if fitted,
from sticking.
The pump may be stored as above for up to 6
months. Consult Flowserve for preservative actions
when a longer storage period is needed.
2.5 Recycling and end of product life
At the end of the service life of the product or its
parts, the relevant materials and parts should be
recycled or disposed of using an environmentally
acceptable method and local requirements. If the
product contains substances that are harmful to the
environment, these should be removed and disposed
of in accordance with current regulations. This also
includes the liquids and/or gases that may be used in
the "seal system" or other utilities.
Make sure that hazardous substances are
disposed of safely and that the correct personal
protective equipment is used. The safety
specifications must be in accordance with the current
regulations at all times.
3
DESCRIPTION
3.1 Configurations
The pump is a modular designed centrifugal pump
that can be built to achieve almost all chemical liquid
pumping requirements. (See 3.2 and 3.3 below.)
3.2 Name nomenclature
The pump size will be engraved on the nameplate
typically as below:
1K80-50-H200A-RV
•
1 = ISO Frame size (1, 2, 3, 4)
•
K = Durco Mark 3 family
•
80 = Nominal suction size in mm
•
50 = Nominal discharge size in mm
•
Configuration modifier:
Blank or no letter = standard frame mounted
P = Self priming casing
R = Recessed impeller, low shear design
N = Center-line mounted high pressure casing
H = High pressure casing
•
200 = Nominal impeller diameter
•
A = Extended flow hydraulic (B = standard
hydraulic)
•
RV = Impeller design (RV = Reverse vane, OP =
Open)
The typical nomenclature above is the general guide
to the Durco Mark3 ISO configuration description.
Identify the actual pump size and serial number from
the pump nameplate. Check that this agrees with the
applicable certification provided.
3.3 Design of major parts
3.3.1
Pump casing
The pump casing is designed with a horizontal
centerline end inlet and a vertical centerline top outlet
that makes it self-venting.
In addition, the P self-priming pump casing is
designed with a self-priming action which works on
the reflux principle for suction lifts up to 7 m (23 ft.).
For ease of maintenance, the pump is constructed so
that pipe connectors do not have to be disturbed
when internal maintenance is required.
Casing feet pads are provided underneath the casing
except on the N casing where they are on the shaft
centerline.
3.3.2
Impeller
Depending on the product, the impeller is either reverse
vane or open. (On the R impeller it is recessed into
the back of the casing.)
3.3.3
Shaft
The large diameter stiff shaft, mounted on bearings,
has a keyed drive end.
3.3.4
Bearing housing
The bearing housing enables adjustment of impeller
face clearance via the bearing carrier micrometer
mechanism.
3.3.5
Pump bearings and lubrication
The pump is fitted with ball and or roller type bearings
which may be configured differently dependent on
use. The bearings may be oil or grease lubricated.
3.3.6
Adaptor
The pump is fitted with an adaptor between bearing
housing and cover for optimum interchangeability.
3.3.7
Cover (Seal chamber)
The cover has spigots between the pump casing and
bearing housing for optimum concentricity.
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