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.

Collapsible content
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
Pool Supply Store
Limited Time Sale
Find the best pool equipment to complete your entire pool system. The lowest possible prices offered at fastest shipping.
-
Open Box Pentair Plus40 Salt Chlorine Generator Cell 523735-EC
Regular price $1,509.00 USDRegular priceUnit price / perSale price $1,509.00 USDSold out -
Pentair IntelliCenter Personality Upgrade Kit i8P | Single Body 521910
Regular price $599.00 USDRegular priceUnit price / per$1,995.00 USDSale price $599.00 USDSale -
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.
Learning Center
Blog posts
The latest news and guides making buying and maintaining pool equipment easier.
-
What are Our Expert Picks for the Best Variable...
Variable speed pool pumps change the economics of owning a pool. They can reduce energy use by up to 90% and still keep your pool properly circulated. In warm weather...
What are Our Expert Picks for the Best Variable...
Variable speed pool pumps change the economics of owning a pool. They can reduce energy use by up to 90% and still keep your pool properly circulated. In warm weather...
Learn More -
Do You have to Cover a Pool in the Winter?
Winter in Arizona is milder than many parts of the country. However, we hear from pool owners every year: “Do I really need to cover my pool?” Many homeowners across...
Do You have to Cover a Pool in the Winter?
Winter in Arizona is milder than many parts of the country. However, we hear from pool owners every year: “Do I really need to cover my pool?” Many homeowners across...
Learn More -
What Raypak Heater Error Codes Mean and How to ...
If you’ve ever glanced at your Raypak heater and seen codes like BD1, PRS, or HL1 blinking back at you, we understand how confusing they can be. Half the time,...
What Raypak Heater Error Codes Mean and How to ...
If you’ve ever glanced at your Raypak heater and seen codes like BD1, PRS, or HL1 blinking back at you, we understand how confusing they can be. Half the time,...
Learn More



