Astral - Main Drain with Anti-vortx Lid - Suitable for Concrete Spas

Manufactured in white ABS, the drain has UV protection and is used to take in water from the deepest part of the pool for 100% recirculation. It is also used to drain the pool. The latest models include a grille that complies with current regulations, in which the distance between the holes is less than 8 mm to prevent entrapment of bathers' fingers. Likewise, the "antivortex" models use lateral suction to prevent whirlpool.

The flat-grille drain, is the most appropriate model for shallow pools

New range of Main drains according the normatives EN-13451-1 and EN-13451-3, available for public and private pools, supplied with flat grilles or antivortex grille.

• Made in white ABS and UV treatment
• 2" side connections and bottom connection with plug for fitting the hydrostatic relief valve (00277) and drainage pipe (21581).
• Recommended max. flow rate: 15 m3/h

Top Tips:

• As a safety measure, two drains should be installed in each pool at a minimum distance of 2m
• According to EN13451 the recommendation maximum velcoity through the grille is 0.5m/s
• If flat grille models are installed, the necessart measures must be taken to prevent whirlpools.
• Install the warner safety system to prevent potential bather injuries by stopping pump suction with any pressure variation.
• It is recommended by the industry that the drain be connected to a hydrostatic valve, and a drainage tube be installed to relieve the pressure that potential groundwater could exert on the pool structure.