Product Overview

The Hayward ProSeries 27" Sand Filter Top Mount W3S270T is designed for reliable, high-performance residential pool filtration. Built with a durable corrosion-proof polymeric tank and an included 1-1/2" top-mount VariFlo multiport valve, this sand filter provides dependable water clarity with simple maintenance and long-lasting performance.

The 27-inch filter tank offers increased filtration capacity compared to smaller sand filters, making it a strong option for larger residential pool systems. Its internal diffuser evenly distributes water across the sand bed, while the precision-engineered lateral system supports balanced flow and efficient backwashing.

Ideal For

Residential in-ground swimming pools
Larger pool systems requiring a 27" sand filter
Pool owners looking for simple, low-maintenance filtration
Systems using 1-1/2" plumbing connections
Replacement for Hayward S270T / W3S270T style filters

Key Features

27" High-Rate Sand Filter Tank

The large 27-inch tank provides dependable filtration capacity and helps remove dirt, debris, and fine particles from pool water.

1-1/2" VariFlo Multiport Valve Included

The included top-mount VariFlo valve allows easy control of filter functions, including filter, backwash, rinse, waste, recirculate, closed, and winter settings.

Durable Corrosion-Proof Construction

The rugged polymeric tank is built to resist corrosion and provide long-lasting outdoor performance in pool equipment environments.

Even Water Distribution

The integral top diffuser distributes water evenly over the sand media bed for consistent filtration and improved overall performance.

Self-Cleaning Lateral System

Precision-engineered umbrella-fold laterals provide balanced water flow and efficient backwashing while helping reduce maintenance effort.

360-Degree Valve Rotation

The flange clamp design allows the valve to rotate 360 degrees, making installation and plumbing alignment easier.

Easy Service and Winterizing

A large pressure sand and water drain helps make servicing, draining, and winter preparation faster and more convenient.

Benefits

The Hayward W3S270T is a practical choice for pool owners who want strong filtration with straightforward maintenance. Sand filtration is easy to operate and backwash, making it a reliable option for everyday residential pool care.

With its 27" tank, 350 lb sand capacity, 3.7 sq. ft. filtration area, and 1-1/2" top-mount multiport valve, this model offers dependable performance for pool systems that need more filtration capacity than smaller 24" models.

Specifications

What’s Included

Hayward W3S270T 27" ProSeries sand filter tank
1-1/2" top-mount VariFlo multiport valve
Filter base
Internal lateral assembly
Pressure gauge

Pool filter sand is not included.

Customer-Facing Q&A

Does this filter include the valve?

Yes. The Hayward W3S270T includes a 1-1/2" top-mount VariFlo multiport valve.

How much sand does this filter require?

This filter requires 350 lbs. of #20 silica pool filter sand.

Is the sand included?

No. Filter sand must be purchased separately.

What is the difference between W3S270T and W3S270T2?

The W3S270T includes a 1-1/2" top-mount valve, while the W3S270T2 version is typically supplied with a 2" top-mount valve.

Is this filter suitable for larger residential pools?

Yes. The 27" tank and 350 lb sand capacity make this model suitable for larger residential pool systems when properly matched to the pump, plumbing, and pool size.

How do I clean this filter?

Cleaning is done by backwashing through the multiport valve. Backwash when the pressure gauge rises approximately 8–10 PSI above the clean starting pressure.

Does this filter include a pressure gauge?

Yes. A pressure gauge is included.