ProSeries Plus 31" Sand Filter - Side Mount (2" Slide Valve Included)
Hayward
SKU: S311SXV
With all the ProSeries advanced features, ProSeries Plus filters are designed to meet the needs of the most demanding applications including large residential and semi-commercial pools, in-floor cleaning systems, solar heating systems and water features.
Features
Incorporating the many advanced features of ProSeries top-mount and side mount sand filters, the ProSeries Plus satisfies the requirements of the most demanding installations, including pools installed with in-floor cleaning systems, spas, fountains or solar heating systems.
Features and Benefits
- Durable, flanged inspection cover provides convenient access to top of side mount filters
- Flange clamp design allows 360° rotation of valve to simplify plumbing
- Top diffuser ensures even distribution of water over the top of the sand media bed. All internal piping is 2" to give smooth, free-flowing performance
- Large pressure sand/water drain for rapid winterizing or servicing
- Unitized, corrosion-proof, spherical filter tank molded of rugged, colorfast polymeric material for maximum strength and longer life
- Optional valve and coupling selections for plumbing ease and versatility. Choose from 6-position VariFlo® valve, 2-position slide valve or 1 1⁄2" SKT x 2" SLIP connectors for multiple (tandem) filter installations
- Precision engineered umbrella-fold self cleaning laterals for balanced flow and backwashing, plus easy serviceability

- EXPERT LINE products can only be purchased through your local pool professional or in-store. Exclusions, other terms, and conditions may apply.
- 3+ Year Parts and Labor Warranties*
*When sold by a Hayward Rewards® partner. Exclusions, other terms and conditions may apply.
| Application | New Construction |
|---|---|
| Backwash Flow Rate | 99 GPM |
| Brand | Hayward |
| Cartridge | No |
| Channel | Expert Line |
| Design Flow Rate | 99 |
| Drain Port Size (Inches) | 1.5 |
| Effective Filtration Area | 4.95 ft.² |
| Filter Type | Sand |
| Footprint | 31 x 31" |
| GTIN | 610377056892 |
| Labor Warranty | 1-year |
| Master Carton Qty | 1 |
| Maximum Working Pressure | 50 PSI |
| Number of Filter Elements | N/A |
| Pallet Qty | 1 |
| Parts Warranty | 3-year |
| Pool Type | In Ground |
| Pressure Gauge | Yes |
| Product Dimensions | 38.625 " x 31 " x 31 " |
| Product Height | 38.625 in |
| Product Length | 31 in |
| Product Weight | 78 lb |
| Product Width | 31 in |
| Public Design Flow Rate | 99 GPM |
| Residential Design Flow Rate | 99 |
| Sand Capacity | 350 lbs. |
| Series Filters | ProSeries Plus |
| Shipping Dimensions | 37 " x 31 " x 31 " |
| Shipping Weight | 84 lb |
| Side Clearance - Filters | 18" |
| Tank Type | Polymeric Resin |
| Turnover - 10 Hours | 59,400 GPM |
| Turnover - 8 Hours | 47,520 GPM |
| Valve Included | 2" Slide Valve |
| Vertical Clearance - Filters | 18" |
Parts Details
Click on the part number in the diagram to display the details.








