Astral ABS - Circular Main Drain with Grille

ABS - Circular Main Drain with Grille Ø270 mm - Suitable for Concrete Pools

Made totally in white ABS, 1½'' bottom connection and 2'' side connections which can be plugged from the inside for pressure testing.

• 11/2" bottom connection with plug or for fitting the hydrostatic relief valve (00277) & drainage tube (21581).
• Grille cover diameter Ø 250 mm.
• Maximum flow rate: 13 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.