Lateral Hub for Astral Pool Cantabric CA/ECA Sand Filters

AstralPool Cantabric Sand Filter Lateral Hub – Part No. 77712

This is the genuine replacement lateral hub for AstralPool Cantabric CA and ECA series sand filters. The lateral hub sits at the base of the filter tank and connects the lateral arms that distribute and collect filtered water through the sand media. A cracked or damaged hub causes water bypass, reducing filtration efficiency and allowing sand to pass into the pool.

Specifications

Frequently Asked Questions

What does the lateral hub do in a sand filter?

The lateral hub is the central manifold at the bottom of the sand filter tank. It connects all the lateral arms (fingers) that run through the sand bed. Water passes through the sand, enters the laterals, and collects in the hub before being returned to the pool. A damaged hub allows unfiltered water or sand to bypass the system.

How do I know if my lateral hub needs replacing?

Signs of a failed lateral hub include sand appearing in the pool, reduced filtration performance, or visible cracks in the hub body. If you notice sand returning to the pool after backwashing, the hub or laterals are the first components to inspect.

Is this compatible with all Cantabric filter sizes?

This hub (77712) is designed for the Astral Cantabric CA and ECA series. Cantabric filters come in multiple tank sizes — if you're unsure whether this part suits your specific filter model, contact us with your filter model number and we'll confirm before you order.

Can I install this myself?

Replacing the lateral hub requires draining and opening the filter tank and removing the sand media. It is a manageable DIY task for those comfortable with pool equipment, but if you're unsure, a licensed pool technician can complete the job quickly.