Bombas

Pool pumps for filtration and circulation

The pump is what makes the rest of a pool installation work. It draws water from the skimmers and main drain, pushes it through the filter, the heater and any treatment equipment, and returns it to the basin through the inlets. If the flow rate drops, filtration quality drops with it: the water turns dull, chlorine or salt systems struggle to distribute evenly, and robotic or hydraulic cleaners lose suction. Here you will find self-priming filtration pumps and the replacement hydraulic and motor parts that keep them running season after season.

Qué incluye la gama

The core of the selection is formed by AstralPool self-priming pumps from the Victoria Plus Silent family, built around a pre-filter basket and a closed impeller, in power ratings from 0,5 HP up to 3 HP. Alongside complete pumps sit the consumable and structural parts that are normally replaced rather than the whole unit.

• Complete filtration pumps — references such as 65557 to 65570H, covering 0,5, 0,75, 1, 1,5, 2 and 3 HP.
• Versiones monofásicas y trifásicas — the II and III in a model name distinguish the two electrical builds, for example 65566 II and 65567 III.
• Variant references with an H suffix — such as 65565H and 65569H, listed in parallel with the standard reference so the correct version can be selected.
• Hydraulic parts — impellers, diffusers, pump bodies, pre-filter baskets and transparent lids.
• Seals and gaskets — mechanical shaft seals, lid O-rings, body gaskets and union seals.
• Electrical parts — terminal covers, capacitors and fan covers for single-phase motors.
• Connection parts — unions, threaded tails and the nuts and clamps that join the pump to the suction and return pipework.

Choosing the right size and supply

Pump output should be matched to the filter and to the volume of the pool, not simply maximised. A pump that is too powerful for the filter pushes water through the sand bed too quickly and reduces filtration efficiency, while an undersized unit will not turn the water over often enough. The usual approach is to work from the filter manufacturer’s recommended flow rate and the pipe diameter already installed, then check the total head the pump has to overcome: the vertical lift, the length of pipework and any heat exchanger, UV unit or salt cell in the circuit.

Electrical supply matters just as much. Single-phase models run on a standard 230 V domestic supply; three-phase versions require a suitable supply and motor protection, and cannot simply be swapped in. Before ordering a replacement, read the motor rating plate and note the power, voltage and frequency, and keep the existing reference number if it is still legible.

Parts that wear and how to identify them

Three things usually fail first. The mechanical shaft seal is the most common: it shows as a drip between the motor and the pump body, or as a pump that loses prime. The lid O-ring hardens and flattens over time, letting air into the suction side so the basket never fills completely. And the pre-filter basket cracks, which lets debris reach the impeller and block the vanes.

To order correctly, start from the exact pump model and use the exploded view for that unit; parts are listed against position numbers, and quoting that number removes most of the guesswork. Where no diagram is available, measure the old part before ordering: for an O-ring, take the inside diameter and the cord thickness; for a mechanical seal, the shaft diameter it sits on. Impellers and diffusers are specific to the power rating, so a 1 HP impeller will not suit a 1,5 HP body even within the same series.

Bombas en PoolParthub.com

Here we list complete self-priming filtration pumps in the common domestic power ratings, in both single-phase and three-phase builds, together with the impellers, diffusers, baskets, lids, seals and electrical components needed to service them.

Stocking pumps and their internal parts side by side means a worn seal or a cracked basket can be dealt with for a fraction of the cost of a new unit, and a pump that has genuinely reached the end of its life can be replaced with the matching power rating and supply type.