Certikin Main drain c/w hydro relief valve, collection tube, bush & nipple

Introducing the Main Drain HD33, a premium offering from Certikin designed to elevate your pool experience to new heights. Whether you have a concrete or liner pool, the HD33 drain is your go-to solution for drawing base water for filtration purposes and serves as the primary method for emptying the pool when needed.

One of the standout features of the HD33 is Certikin’s unique grille design, setting it apart from conventional drains in the market. Available in both concrete and liner variants, the HD33 comes equipped with self-tapping fixing screws for enhanced safety and ease of installation, ensuring a secure fit for long-term reliability.

Manufactured using high-quality white ABS material, the HD33 boasts a range of features that make it a top choice for pool owners looking for efficiency and performance. The High Flow design combined with a Low Velocity grille provides exceptional water flow, offering up to 50% more free flow area than other models on the market.

One of the key highlights of the HD33 is its anti-vortex design, which prevents swirling water patterns that can disrupt filtration and create potential hazards. Additionally, a protective film is included to safeguard the drain during installation, ensuring it arrives in pristine condition and ready for immediate use.

For those seeking even greater durability and aesthetics, an optional stainless steel grille (CK33S) is available as an upgrade, adding a touch of elegance to your poolside environment. Commercial installations can benefit from the square frame and grille range, catering to larger pool setups with precision and style.

When it comes to selecting the right main drain size, it is crucial to consider the total flow requirements of your pool system. The sump size should be chosen based on the assumption that the entire flow may pass through it, with different ratios recommended for Skimmer type pools versus Deck Level pools.

For commercial or shallow pool applications, the use of stainless steel main drain grilles is mandatory to meet safety standards and ensure long-term performance. To prevent any risks to bathers, the arrangement of main drains should be carefully planned to avoid potential entrapment or suction hazards.

To enhance safety and efficiency, it is recommended that a minimum of two main drains be installed at least 2 meters apart in all pool installations, including domestic setups. This dual-drain configuration helps distribute flow evenly and reduces the risk of suction entrapment, promoting a safer swimming environment for all users.

For easy reference and product verification, please ensure that you match the product specifications with the title and part number before making a purchase. Detailed product documentation, including CAD drawings and manuals, are available for download to assist you in the installation and maintenance of your Main Drain HD33:

HD33_CAD-69.pdf,

HD33-70.dwg,

HD33D_CAD-71.pdf,

HD33D-72.dwg,

Certikin_maindrain_manual-73.pdf,

certikin_maindrain_brochure-74.pdf

Manufacturers description:

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.

Please note images and documentation are for the complete range of products, please ensure you purchase the correct item as specified in the title and with the part number you require.

Product documentation:

HD33_CAD-69.pdf,
HD33-70.dwg,
HD33D_CAD-71.pdf,
HD33D-72.dwg,
Certikin_maindrain_manual-73.pdf,
certikin_maindrain_brochure-74.pdf