AS PER ISO 2858 / DIN 24256
Performance
Pumps are manufactured in various materials such as:
Pumps are as per DIN 24256 and ISO 2858. The design is of back pull-out type. Large variety of models are available to operate at 1450 rpm and 2900 rpm at 50 Hz and 1750 rpm and 3500 rpm at 60 Hz.
The casing has axial suction and top centre line delivery. Smooth hydraulic passages ensure high efficiency. Normal design is for foot mounted pumps.
The impellers are of enclosed type and semi-open impellers can also be supplied. Hydraulic balancing of impellers is achieved either by back wear rings. The impellers are statically and dynamically balanced.
The shaft is supported by two antifriction bearings to take residual axial thrust and prevent axial float or radial run out. It is fully protected from the liquid handled by means of a shaft sleeve and PTFE gaskets are provided between impeller nut, impeller hub and shaft sleeve.
The stuffing box is sealed by gland packing or by mechanical seal. Conversion from gland packing to mechanical seal is easily achieved by changing some standardised parts. Re-machining of stuffing box is not necessary.
The bearings are oil lubricated.
Clockwise when viewed from driving end.
| Standard | Optional |
|---|---|
| Drilling as per ND 16 | DIN ND 10, ND 25 |
| DIN 2533 (Cast Iron Raised Face) | ASA 150 BS 10 Table F |
| DIN 2543 (Steel Plain Face) | BS 4504 – 16 bar or 25 bar |
