Main Drains (3)

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Certikin Main Drains - Concrete Pools

Main Drain HD33 Featuring Certikin's unique grille design and available for concrete or liner pools the HD33 drain is used to draw the base water for -ltering and is also used as the principal method of emptying the pool. Both concrete and liner types come complete with self-tapping fixings screws for added safety. Manufactured in white ABS.Features:- High Flow- Low Velocity grille supplied as standard- Provides up to 50% more free flow area than other models- Anti-vortex design- Protective film prevents damage during installation- Stainless steel grille available (CK33S)- Square frame and grille range available for commercial installationsMain Drain SelectionWhen choosing sump (main drain) size always assume that total flow may be directed to the plant room via the sump(s) - sump size should be chosen accordingly. In normal conditions flow will be divided between surface draw-off and sump(s) in ratio: 70% Surface/30% sump for Skimmer type pools or 50% Surface/50% sump for Deck Level pools.Important - On commercial or shallow pool applications stainless steel main drain grilles must be used. Recommendation - Main drains must be arranged so that there is no risk of bathers being drawn towards them or trapped there. It is recommended that on all installations, including domestic, a minimum of 2 x main drains are installed 2 metres apart.

Certikin Main Drains - Liner Pools

Main Drain HD33L Featuring Certikin's unique grille design and available for concrete or liner pools the HD33 drain is used to draw the base water for -ltering and is also used as the principal method of emptying the pool. Both concrete and liner types come complete with self-tapping fixings screws for added safety. Manufactured in white ABS.Features:- High Flow- Low Velocity grille supplied as standard- Provides up to 50% more free flow area than other models- Anti-vortex design- Protective film prevents damage during installation- Stainless steel grille available (CK33S)- Square frame and grille range available for commercial installationsMain Drain SelectionWhen choosing sump (main drain) size always assume that total flow may be directed to the plant room via the sump(s) - sump size should be chosen accordingly. In normal conditions flow will be divided between surface draw-off and sump(s) in ratio: 70% Surface/30% sump for Skimmer type pools or 50% Surface/50% sump for Deck Level pools.Important - On commercial or shallow pool applications stainless steel main drain grilles must be used. Recommendation - Main drains must be arranged so that there is no risk of bathers being drawn towards them or trapped there. It is recommended that on all installations, including domestic, a minimum of 2 xmain drains are installed 2 metres apart.

Certikin Main Drain Accessories

CK33S Stainless Steel GrilleFor shallow learner and plunge pools where direct foot contact is made with the pool floor. Supplied as a kit to fit directly onto a standard HD33 or HD33L sump pot.Hydrostatic Relief Valve: CK34S (heavy brass body) HD34 (plastic body)Use of a hydrostatic relief valve helps to avoid possible damage to an empty pool if the water table rises above the level of the pool floor. It allows the ground water to enter the pool via the main drain to help to prevent possible structural damage to the pool shell.HD35 Collection TubeWorks in conjunction with the hydrostatic relief valve to collect water from the underside of the pool floor.