The Hayward HCF342C 42" Bobbin-Wound Sand Filter is a high-capacity commercial filtration system engineered for maximum performance, durability, and efficiency. Designed as a large-format solution, this model eliminates the need for multiple smaller filters, conserving valuable equipment room space while reducing installation and plumbing complexity. Constructed from heavy-duty filament-wound fiberglass with a UV-protected resin coating and corrosion-proof internals, the HCF342C delivers exceptional longevity and reliable water clarity in demanding commercial environments.

Key Features

• Large-format 42" design eliminates the need for multiple smaller filters, reducing plumbing complexity and saving critical equipment room space.

• Supports flow rates up to 433 GPM, providing high-performance filtration for large pools, waterparks, aquatic centers, and commercial installations.

• Heavy-duty filament-wound fiberglass construction offers superior strength, long-term durability, and resistance to cracking or deformation.

• UV-protected resin coat shields the filter from environmental exposure, chemical corrosion, and long-term wear in harsh operating conditions.

• Corrosion-proof internals ensure reliable performance even in challenging aquatic environments with high chemical concentrations.

• Large manway opening with a positive-seal mechanism allows easy internal access for inspection, maintenance, and backwashing.

• Industrial-grade laterals and quad diffusers optimize water distribution, improving filtration efficiency and extending filter cycle times.

• Durable fiberglass base provides a stable installation platform suitable for heavy commercial use.

• Streamlined design simplifies installation and reduces long-term maintenance demands, improving operational efficiency.

• Ideal for commercial pools, municipal facilities, resorts, waterparks, and high-volume aquatic environments needing high-capacity filtration.

Product Overview
The Hayward HCF342C Bobbin-Wound Sand Filter is engineered to deliver superior filtration capacity and long-lasting durability for large commercial aquatic facilities. Its 42" large-format design allows operators to consolidate filtration into a single high-capacity unit, reducing installation costs, plumbing complexity, and ongoing service requirements. The heavy-duty filament-wound fiberglass body and UV-protected resin finish ensure excellent longevity, resisting corrosion and environmental wear even in the most challenging conditions.

Inside, corrosion-proof internals, quad diffusers, and industrial-grade laterals work together to create optimal hydraulic flow and extended filter cycles—minimizing downtime and improving overall filtration performance. The positive-seal manway provides easy access for inspections and maintenance, while the rigid fiberglass base ensures reliable installation stability. Built for high flow rates and demanding commercial applications, the HCF342C offers a streamlined, efficient, and robust filtration solution that stands up to years of continuous operation.