Hayward ProSeries™ 31" Sand Filter w/ 2" Valve | S310T2

Hayward Pro-Series Top Mount Sand Filters | CORROSION-RESISTANT CONSTRUCTION
FOR LONG-LASTING PERFORMANCE

The Hayward ProSeries S310T2 is a 31-inch top-mount sand pool filter with 2-inch multiport valve, engineered for large and high-flow residential inground swimming pools that demand reliable, low-maintenance filtration. Designed by Hayward — a trusted name in pool equipment — this model combines robust construction with high-capacity performance suitable for larger pump pairings and systems with significant circulation demands.

Featuring a 2-inch multiport valve and optimized internal laterals, the S310T2 supports strong hydraulic flow while minimizing pressure drop across the sand bed. This allows consistent filtration performance and helps maintain steady water clarity in demanding installations. The reinforced, corrosion-resistant polymer tank is built for long service life in outdoor environments, resisting weathering and long periods of operation.

Ideal for larger pool systems, the S310T2 delivers effective sand filtration while offering extended intervals between backwashing. Its larger diameter and increased sand media volume help trap and capture debris efficiently without compromising water flow.

Key Specifications

• Filter Type: Sand

• Mount Style: Top Mount

• Filter Diameter: 31 inches

• Valve Size: 2-inch top-mount multiport

• Maximum Recommended Flow Rate: ~85–90 GPM*

• Sand Capacity: Approx. 500-550 lbs (estimate — confirm with manual)

• Pool Type: Inground

• Tank Material: Reinforced polymer

• Filtration Media: Standard pool filter sand

• Application: Residential, high-flow systems

• Maintenance: Backwash and rinse

*Actual flow depends on pump pairing, plumbing size, and system hydraulics—always match pump GPM to filter recommendation.

Key Features & Benefits

• 31" sand filter tank for extended filtration capacity

• 2-inch multiport valve for higher flow applications

• Designed for ~85–90 GPM with properly sized systems

• Reinforced, corrosion-resistant polymer construction

• Top-mount multiport control for filter/backwash/rinse positions

• Large sand media volume captures more debris

• Supports larger residential pool systems and high-output pumps

• Trusted Hayward quality and serviceability

Frequently Asked Questions (FAQs)

What pool sizes is the S310T2 best suited for?

The S310T2 is ideal for large inground residential pools and high-flow systems, particularly where higher circulation rates are needed.

What is the recommended flow rate for this filter?

This filter performs well with flows in the range of 85–90 GPM when properly matched with the pump and plumbing configuration.

How much sand does this filter hold?

The S310T2 typically holds approximately 500–550 lbs of pool filter sand. Always consult the official manual for exact media weights.

What valve size does this filter use?

It includes a 2-inch top-mount multiport valve, designed for higher flow and reduced restriction.

Does this filter require backwashing?

Yes — as a sand filter, it requires periodic backwashing to remove trapped debris and restore filtration efficiency.

Is professional installation recommended?

Yes. Professional installation ensures correct sand loading, proper plumbing alignment, and optimal hydraulic performance.