Description
Astralpool pump body 4405010405
The Astralpool pump body 4405010405 is the original hydraulic housing for selected Astralpool pool circulation pumps. This robust moulded casing contains the impeller, diffuser and prefilter section, providing the structural base for the wet end and the main pressure boundary of the pump in daily filtration service.
Main features of the pump body 4405010405
- Original Astralpool replacement housing for compatible pool pumps.
- Corrosion resistant plastic body designed for treated pool water.
- Integrated prefilter chamber with seat for basket and lid o-ring.
- Factory shaped suction and discharge ports for matching unions and fittings.
Function of the Astralpool pump body
The pump body forms the core of the hydraulic section. It receives water from the suction line, directs it through the impeller and diffuser and sends it back to the filtration circuit via the discharge port. At the front, the body houses the prefilter basket and transparent lid, while at the rear it connects to the seal plate and motor. A sound housing is essential for correct priming, stable pressure and safe operation.
- Contains the impeller, diffuser and prefilter basket in one compact casing.
- Maintains the internal geometry that defines the pump performance curve.
- Provides threaded or union connections for suction and return pipework.
Compatibility and typical applications
The Astralpool pump body 4405010405 is intended for specific Astralpool pool pumps that list this reference as their main housing in the exploded view. It matches the original dimensions, fixing points and seal interfaces, so it can be installed directly in place of a damaged or cracked body without modifying adjoining parts.
- Suitable for Astralpool circulation pumps that specify code 4405010405.
- Designed for residential pools with sand, glass or cartridge filtration.
- Compatible with the corresponding Astralpool prefilter lid, basket and gasket sets.
Before ordering, always check the pump identification label and spare parts diagram to confirm that 4405010405 is the correct body for your model.
When to replace the pump body 4405010405
Although the housing is built from durable plastic, it works under pressure and can suffer damage over time from frost, mechanical stress or incorrect installation. A compromised pump body should be replaced immediately to avoid leaks and safety risks.
- Visible cracks, splits or impact damage on the casing or around the ports.
- Water seepage through the body wall, not from gaskets or unions.
- Deformation that prevents lids, baskets or unions from seating correctly.
- Thread damage on connections that cannot be sealed reliably.
Replacing the complete housing with the original Astralpool pump body 4405010405 restores the structural integrity of the pump and allows the other components to be reused if they are still in good condition.
Installation guidelines
Fitting a new pump body is normally done during a major service where the wet end is fully disassembled. The work must always be carried out with the electrical supply isolated and the hydraulic circuit depressurised.
- Switch off and isolate the pump electrically, then close valves and drain the housing.
- Remove the prefilter lid, basket and drain plugs, then separate the wet end from the motor.
- Disassemble the seal plate, diffuser and impeller, noting the order of parts.
- Transfer the required components to the new 4405010405 body, including drain plugs and inserts.
- Install new gaskets and o-rings where the housing meets the seal plate and lid.
- Reassemble the pump, reconnect unions and prime the prefilter before starting.
After installation, check carefully for leaks around the joints and ports and verify that the pump primes quickly and runs smoothly.
Maintenance and good practice
With the new Astralpool pump body 4405010405 in place, a few simple habits will help extend its service life and keep the filtration system reliable.
- Protect the pump from frost by draining the housing in cold climates when out of service.
- Support pipework properly so the ports are not stressed by heavy or misaligned pipes.
- Avoid overtightening unions or fittings that screw into the plastic connections.
- Maintain balanced water chemistry to reduce long term stress on plastic and seals.
With correct installation and regular maintenance, the Astralpool pump body 4405010405 restores a solid, leak free base for compatible pumps and helps ensure many more seasons of safe, efficient pool filtration.
