Hayward | W3S180T | ProSeries 18" Top-Mount w/ Valve | Sand Pool Filtration System

The Hayward W3S180T ProSeries 18" Sand Filter (Top Mount) is a compact and efficient filtration solution for above-ground and small in-ground pools. Built with a corrosion-proof tank and advanced self-cleaning underdrain technology, it delivers clear, sparkling water with minimal maintenance. Its top-mount configuration ensures easy operation and space-efficient installation, making it ideal for smaller pool setups.

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Key Features

• 18" tank diameter for compact pool filtration needs

• Top-mount multiport valve for simple control and operation

• 360° self-cleaning underdrain for balanced water flow and consistent performance

• Corrosion-proof, precision-molded polymer tank for long-lasting durability

• Integral diffuser for even water distribution over the sand bed

• Uses standard #20 silica sand (not included)

• Large sand/water drain for quick servicing and winterizing

• Easy-to-read pressure gauge for accurate system monitoring

• Quiet and energy-efficient operation

• Suitable for above-ground and small in-ground pools

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Product Overview

The Hayward W3S180T ProSeries 18" Sand Filter provides dependable filtration in a space-saving design. Its top-mount valve allows easy access for switching between filtration, backwashing, and rinsing functions, while the self-cleaning underdrain and integral diffuser optimize water flow for maximum efficiency. Built with a corrosion-resistant polymer tank, it withstands the elements and pool chemicals for years of reliable performance. Perfect for smaller pools, the W3S180T offers professional-grade water clarity with minimal upkeep.