Hidrostal S.A. (Pty) Ltd
SUBMERSIBLE AND IMMERSIBLE PUMPS
SUBMERSIBLES
Pumps are heavy-duty construction, designed to operate at depths of 20 meters with special versions available for depths up to 200 meters.
Installation options:
· GUIDE RAIL MOUNTED UNITS
For permanent installation and ease of maintenance, a guide rail mounted arrangement is available. Twin guide rails ensure the pump is guided to the discharge elbow and correctly locates into position to give a leak free connection.
· FREE STANDING OR PORTABLE UNITS
For applications where a permanent guide rail system is inappropriate, or a temporary arrangement is required, all Hidrostal submersible (and immersible) pumps can be used as free-standing or portable units.
· AXIAL FLOW – TUBE MOUNTED
Hidrostal “A” type pumps are designed for low head applications up to 10m and flows from 30 to 1,100l/s. The axial pump range is based around Hidrostal’s standard range of submersible motors having the same benefits as previously described. The difference is that the volute on the low pressure versions is replaced with a casing having an axial discharge enabling the pumps to be installed in a tube or concrete chamber.
IMMERSIBLE
Hidrostal immersible pumps are versatile, innovative development of the established submersible range. Capable of continues operation in a dry installation, the immersibles may be operated, with equal efficiency, when fully or partially submerged.
The pumps are particularly suited for dry pit applications where the combination of the screw centrifugal impeller and immersible motor can be considered state-of-the-art technology. Leakage of the pumped product is eliminated by tandem seals running in a oil bath, avoiding a situation commonly experienced with soft packed glands. Hidrostal immersible waste water / sewage pumps stations have frequently been mistaken for clean water stations, due to the lack of odour and the cleanliness of the buildings. Immersible pumps are particularly suited for installations where quiet running, clean surroundings, reliable and long trouble free operation is required. The pumps may be installed vertically or horizontally.
ADVANTAGES OF DRY PIT INSTALLAION
· Quiet running
· Cool exterior
· No leakage of product
· Compact, simple installation
· No exposed rotating shafts or couplings
· Pump easily opened for inspection
· Vertical or Horizontal installation
· Clean odour-free waste water pump stations
ADVANTAGES OF WET PIT INSTALLATION
· Pumps can be installed in the same manner as submersible pumps
· Liquid level can be drawn down to pump casing without risk of overheating the motor
· Shallower sumps compared to conventional submersible pump installations
· Full motor rating maintained when pumping sludge