The 'ASTRO' is a range of dewatering submersible pump designed for effective handling of water and wastewater. It is robust, compact and reliable, and is suitable in a wide range of sump pump and drainage applications in both commercial and industrial installations. The hydraulics with the semi-open vortex type impeller and a stainless steel strainer, allows for pumping soft solids in suspension and less susceptible to blockage.
The Astro pumps are designed for permanent submerged installation, e.g. by means of an auto coupling or guide rail system; or for free-standing installation on a ring stand with a flexible pipe connection.
Available in VCT or H07RN-F or SJOW/SOW. Variable length of cable is available upon request.
Expoxy resin sealed cable base to prevent the intrusion of moisture into motor through the core wires.
The 'auto-cut' protector, which is a standard feature, is integrated in the motor. It protects the motor from 'burning' by automatically cutting off the motor circuit in the event of power surge or excessive heat built-up. The 'auto-cut protector' switch automatically restarts the motor once the temperature drops to about 60~70oC; or when the cause of the surge has been rectified.
High grade, deep grooved, ball bearing, which is sealed-for-life type. As the bearings are permanently lubricated by grease, there is no requirement for lubricating oil.
High-tensile stainless steel shaft to handle maximum loading. It is supported by upper and lower ball bearings.
Corrosion resistant SUS304 stainless steel motor casing, providing a longer service life; and gives an attractive and lasting appearance.
High-efficiency 'dry' motor, designed to ensure energy saving operations. Highest insulation class is achieved by 8 hours of stator winding impregnated with varnish heat dried in industrial oven.
Superior abrasion resistant 'double' mechanical seal is fitted as standard for the A Series. With single spring coiled in oil chamber designed for more flexibility to accommodate misalignment, shaft deflection and break away shock loading. The mating faces at the impeller-side is SiC against SiC; whereas the motor-side is of carbon against ceramic.
Separate oil chamber, lubricating and cooling the mechanical seals.
An oil lip seal is mounted outside of the seal chamber to prevent solids from gathering around the mechanical seal faces.
ASTRO 'AT' Series fitted with different 'semi-open' vortex type impeller to cater to various demands in duties.
Draining of water or rainwater in residential cellars or carpark basement and garages.
Small scale irrigation and flood control.
Pumping of waste water in buildings including hotels, hospitals, schools, restaurants, commercial buildings, etc.
General dewatering application from sump pits, tanks and ponds.
Maximum capacity up to 1200 litres/min
Maximum discharge head up to 29 metres
0 ~ 40oC