ProSeries 31" Sand Filter Top Mount Hayward W3S310T2
ProSeries 31" Sand Filter Top Mount Hayward W3S310T2
Keep your in-ground pool clean and crystal clear with the Hayward ProSeries 31″ Top Mount Sand Filter. Shasta Pool Supply offers fast shipping and competitive pricing on Hayward’s most trusted filtration systems. Built with a 2″ Vari-Flo™ multiport valve, this ProSeries filter delivers powerful, energy-efficient water flow and long-lasting performance.
ProSeries 31" Sand Filter Hayward W3S310T2
Engineered for durability and ease of maintenance, the corrosion-resistant tank features an integral top diffuser that ensures even water distribution for superior clarity. The self-cleaning laterals and 360° rotatable valve make setup and backwashing effortless, reducing downtime and keeping your water sparkling clean all season long.

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Key Features
- Self-Cleaning Laterals: Precision-engineered 360° slotted laterals ensure balanced flow and efficient backwashing.
- Integral Top Diffuser: Even water distribution over the sand bed for consistent filtration across the entire media area.
- Rotatable Valve / Plumbing Friendly: Flange clamp design allows 360° rotation of the control valve to simplify plumbing layout and installation.
Technical Specifications
- Valve Size / Connection: 2″ Top-Mount Vari-Flo™ multiport valve
- Maximum Backwash / Flow Rate: 98 GPM
- Maximum Working Pressure: 50 psi
- Filter Weight: 83 lbs
Specs
- Part Number: W3S310T2
- Manufacturer: Hayward
- Length: 24.5
- Width: 24.5
- Height: 48.0
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What our customers are saying
Great price on the item I needed and quick shipping
Great price on the item I needed and quick shipping
Louis A
Ordering and payment was simple and easy to do. Dan is wonderful.
Ordering and payment was simple and easy to do. Dan is wonderful.
DeeDee B
Called the Phoenix office and gentleman who assisted me was very helpful and confirmed they had what I was looking for.
Called the Phoenix office and gentleman who assisted me was very helpful and confirmed they had what I was looking for.
Douglas S
FAQ
Our expert staff answers customer's most asked questions.
When do I need to change my sand?
For best performance, replace the sand in your Hayward ProSeries 22" Filter every 3–5 years. However, if you notice cloudy water, faster pressure build-up, or frequent backwashing, it may be time for a change sooner.
What is the recommended duration for running my pool equipment?
There isn't a specific timeframe, but it's essential to complete a full water turnover within a 24-hour period. Utilizing pool equipment during off-peak hours can be cost-effective.
Can I use a salt cell with a sand filter?
Yes, a salt cell can be used with a sand filter. In fact, the two work perfectly together — the filter clears debris from the water, while the salt system sanitizes it for a clean, balanced pool.
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