The Hayward Pro Series side-mount sand filter uses a precision-engineered umbrella-fold self-cleaning lateral under-drain system for efficient flow and evenly distributed water, giving totally balanced backwashing and long-lasting performance. Molded from durable, corrosion-proof polymeric material, it delivers dependable all-weather operation for large in-ground pools. A durable flanged inspection cover provides convenient access to the top of the filter, a top diffuser spreads water evenly over the sand bed, and automatic air relief purges trapped air during operation. A large pressure sand and water drain makes winterizing and servicing fast. Please note the control valve is sold separately for this model.
Features
- Umbrella-fold self-cleaning lateral under-drain for balanced backwashing and long life
- Corrosion-proof unitized polymeric tank for dependable all-weather performance
- Flanged inspection cover for convenient access to the top of the filter
- Top diffuser for even distribution over the sand bed
- Automatic air relief purges trapped air during operation
- Large pressure sand and water drain for rapid winterizing or service
- Side-mount configuration for large in-ground pools
- Included pressure gauge
- Control valve sold separately
Specifications
- Part Number: W3S310S
- Type: High-rate side-mount sand pool filter
- Tank Size: 30 in
- Sand Capacity: 500 lb
- Design Flow Rate: 98 GPM residential, 98 GPM public
- Backwash Flow Rate: 98 GPM
- Maximum Working Pressure: 50 PSI
- Valve: Not included (compatible with 6-position VariFlo)
- Drain: 1.5 inch
- Application: In-ground pools
- Tank: Polymeric resin, corrosion proof
- Footprint: 30.5 in x 30.5 in
- Clearances: 18 in side, 18 in vertical
- Dimensions: 40 in H x 30.5 in x 30.5 in
- Shipping Weight: 83 lb
- Warranty: 1 year parts








