Fluidra - Sand Filter Air Bleed Sight Glass for Astralpool Berlín Ø500–Ø900

Fluidra – Sand Filter Air Bleed Sight Glass for Astralpool Berlín Ø500–Ø900

This is the genuine Fluidra air bleed sight glass (purge valve with sight window) designed for Astralpool Berlín sand filters. It mounts on top of the filter tank and allows trapped air to be safely vented from the system, maintaining efficient water flow and correct operating pressure. The integrated sight glass lets you visually confirm when air has been fully purged and water is flowing cleanly.

Compatibility

This part is a direct OEM replacement for Astralpool Berlín sand filters in tank diameters Ø500, Ø600, Ø750, and Ø900 mm. The parent assembly is the Ø600 / 14,000 l/h, 1½” valve-less filter unit, but the part fits across the full Berlín diameter range. Always cross-reference your filter model and existing part before ordering.

Why Genuine Matters

As an authentic Fluidra spare part, this air bleed sight glass is manufactured to the exact tolerances of the original component, ensuring a leak-free seal and reliable operation. Generic alternatives may not match thread pitch or seating dimensions, risking air ingestion, pressure loss, or damage to the filter head. Choosing a genuine part protects the integrity of your filtration system and your warranty.

Installation

The sight glass screws directly into the designated port on the filter tank lid. Shut down the pump and relieve system pressure before removal or fitting. Hand-tighten and check for leaks on first restart. While a competent pool owner can complete this replacement, a qualified pool technician is recommended if you are unfamiliar with pressurised filter systems.