Hayward | HCF336C | HCF Series 36" Laminated Sand Filter 3in

The Hayward HCF336C 36" Laminated Sand Filter is a heavy-duty commercial filtration system engineered for maximum performance, long filter cycles, and exceptional durability. Featuring an enhanced multi-diffuser internal design and oversized 3" connections, this filter delivers superior water distribution, high-capacity flow handling, and improved hydraulic efficiency. Its UV-protected, infusion-molded fiberglass shell resists corrosion, blooming, and biofilm buildup, while the transparent manway simplifies inspection and maintenance. Built to withstand demanding commercial environments, the HCF336C provides reliable, high-volume sand filtration for aquatic facilities that require long service life and consistent water clarity.

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Key Features

• Multi-diffuser distribution system ensures even water flow across the sand bed, enhancing filtration effectiveness and significantly extending filter cycles.

• Oversized 3" connections support high-capacity commercial hydraulics, reducing head loss and improving overall system efficiency in large installations.

• UV-protected gel coat and corrosion-resistant fiberglass shell protect the filter from sunlight, chemicals, and environmental degradation.

• Transparent manway design provides clear visibility for internal inspection, simplifying service, monitoring, and routine maintenance.

• Quad-head diffuser configuration offers optimized water distribution for the HCF336C, improving performance and minimizing channeling in the sand media.

• Commercial-grade PVC and ABS injection-molded internals with 360° slotted laterals deliver strong hydraulic performance and long-term resistance to harsh chemical environments.

• Industrial valve and pressure gauge configuration ensures durable operation and accurate pressure monitoring in rigorous commercial applications.

• Laminated shell construction enhances structural stability, increasing longevity even under heavy filtration demands.

• NSF/ANSI Standard 50 Certified for commercial pool and spa installations.

• Supported by a 5-year parts and 1-year labor warranty for long-term operational confidence.

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Product Overview
The Hayward HCF336C Laminated Sand Filter is engineered to provide robust, high-performance filtration for commercial aquatic facilities with demanding circulation requirements. The quad-head multi-diffuser system delivers uniform water distribution across the sand bed, maximizing filtration efficiency, reducing media channeling, and extending the periods between backwash cycles. Its durable, infusion-molded fiberglass shell includes a UV-protected gel coat to resist corrosion, weather exposure, and biological buildup.

The oversized 3" hydraulic connections enhance high-flow system compatibility, making the HCF336C ideal for waterparks, aquatic centers, hotels, resort pools, and municipal installations. The transparent manway simplifies visual inspections, while the industrial-grade internals ensure longevity in harsh water conditions. Backed by NSF certification and a strong commercial warranty, the HCF336C stands out as a powerful and operator-friendly filtration solution built for long-lasting commercial use.