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Hayward Pro Series 30" Side Mount Sand Filter without Valve

by Hayward
$1,650.00

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✓ Authorized Dealer
✓ Free Shipping
✓ Manufacturer Warranty
✓ Expert Support

The Hayward Pro Series 30" Side Mount Sand Filter without Valve (W3S310S) is the tank-only version of the ProSeries 30-inch side-mount sand filter — ideal for replacements where the existing side-mount VariFlo valve is being reused, or for new installations where the valve is specified separately. The ProSeries umbrella-fold self-cleaning lateral system provides efficient flow and totally balanced backwashing for long-lasting performance.

Features 360 slotted self-cleaning laterals, integral top diffuser for even water distribution, integral molded drain plug, corrosion-proof polymer tank, and flanged inspection/access cover for easy top-of-filter access. Backed by a 1-year warranty.

Note: No valve included. Filter sand not included. A compatible Hayward VariFlo side-mount valve must be purchased separately.

Key Features

Tank Only — Reuse Existing Valve

Perfect for tank replacements when the existing side-mount VariFlo valve is in good condition and will be reused.

360-Slot Umbrella-Fold Self-Cleaning Laterals

Multilateral underdrain assembly with 360 slotted laterals provides totally balanced flow and backwashing.

Integral Top Diffuser

Ensures even distribution of water over the top of the sand media bed for consistent filtration.

Integral Molded Drain Plug

Easy tank draining without loss of sand.

Flanged Inspection/Access Cover

Convenient top-of-filter access for inspection and sand changes.

Corrosion-Proof Tank / 1-Year Warranty

Durable color-fast polymeric construction, Hayward warranty.

Specifications

Performance

Filtration Area 4.91 sq ft
Filter Type Side-Mount Sand (No Valve)
Max Working Pressure 50 PSI

Tank

Tank Diameter 30 in
Lateral System 360-Slot Umbrella-Fold Self-Cleaning
Base Material Injection-Molded Polymer
Mounting Side Mount
Side Clearance Required 18 in
Vertical Clearance Required 18 in

Physical

Product Weight 83 lb
Shipping Dimensions 32 × 32 × 48.3 in

Approvals & Warranty

Application In-Ground Pool / Spa / Ponds
Warranty 1 Year

What's in the Box

  • Hayward Pro Series W3S310S 30" Sand Filter Tank (No Valve)
  • User Manual

Note: No valve included. Filter sand not included. A compatible Hayward VariFlo side-mount valve must be purchased separately.

Warranty

The Hayward Pro Series W3S310S comes with a 1-year manufacturer warranty. Clearflow Pool Supply is an authorized Hayward dealer and will assist with any warranty service needed.

Description
✓ Authorized Dealer ✓ Free Shipping ✓ Manufacturer Warranty ✓ Expert Support

The Hayward Pro Series 30" Side Mount Sand Filter without Valve (W3S310S) is the tank-only version of the ProSeries 30-inch side-mount sand filter — ideal for replacements where the existing side-mount VariFlo valve is being reused, or for new installations where the valve is specified separately. The ProSeries umbrella-fold self-cleaning lateral system provides efficient flow and totally balanced backwashing for long-lasting performance.

Features 360 slotted self-cleaning laterals, integral top diffuser for even water distribution, integral molded drain plug, corrosion-proof polymer tank, and flanged inspection/access cover for easy top-of-filter access. Backed by a 1-year warranty.

Note: No valve included. Filter sand not included. A compatible Hayward VariFlo side-mount valve must be purchased separately.

Key Features

Tank Only — Reuse Existing Valve

Perfect for tank replacements when the existing side-mount VariFlo valve is in good condition and will be reused.

360-Slot Umbrella-Fold Self-Cleaning Laterals

Multilateral underdrain assembly with 360 slotted laterals provides totally balanced flow and backwashing.

Integral Top Diffuser

Ensures even distribution of water over the top of the sand media bed for consistent filtration.

Integral Molded Drain Plug

Easy tank draining without loss of sand.

Flanged Inspection/Access Cover

Convenient top-of-filter access for inspection and sand changes.

Corrosion-Proof Tank / 1-Year Warranty

Durable color-fast polymeric construction, Hayward warranty.

Specifications

Performance

Filtration Area 4.91 sq ft
Filter Type Side-Mount Sand (No Valve)
Max Working Pressure 50 PSI

Tank

Tank Diameter 30 in
Lateral System 360-Slot Umbrella-Fold Self-Cleaning
Base Material Injection-Molded Polymer
Mounting Side Mount
Side Clearance Required 18 in
Vertical Clearance Required 18 in

Physical

Product Weight 83 lb
Shipping Dimensions 32 × 32 × 48.3 in

Approvals & Warranty

Application In-Ground Pool / Spa / Ponds
Warranty 1 Year

What's in the Box

  • Hayward Pro Series W3S310S 30" Sand Filter Tank (No Valve)
  • User Manual

Note: No valve included. Filter sand not included. A compatible Hayward VariFlo side-mount valve must be purchased separately.

Warranty

The Hayward Pro Series W3S310S comes with a 1-year manufacturer warranty. Clearflow Pool Supply is an authorized Hayward dealer and will assist with any warranty service needed.

Shipping

Shipping Policy

At ClearFlow Pool Supply, we keep things simple.

👉 Free shipping on all orders within the United States.
No hidden fees. No surprises.


Order Confirmation

As soon as you place your order, you’ll receive an order confirmation email.

This means:

  • we’ve received your order
  • your payment method has been pre-authorized

Once your order is in our system, we verify:

  • product availability
  • inventory status with our suppliers

If an item is unavailable or backordered, we will:

  • void the pre-authorization
  • contact you promptly to discuss alternatives

If your item is in stock and ready to ship (typically within 3–5 business days), your order will be processed and prepared for shipment.


Order Shipment

Orders that are in stock will typically ship within 3 business days.

You will receive a shipping confirmation email with tracking details within 24 hours of your order leaving the warehouse.

If you do not receive tracking information within 4 business days, please contact us at:

👉 support@clearflowpoolsupply.com 


Shipping Scope

We currently ship to customers within the United States.

Due to the size and nature of many pool equipment products, some orders may ship via freight carriers. Delivery times may vary depending on location and product availability.


International Orders

At this time, our products are designed and configured for the U.S. market, operating on 110V electrical systems and meeting U.S. safety standards.

We may be able to accommodate international orders on a case-by-case basis.
If you are located outside the United States, please contact us to request a custom shipping quote.


Damaged Shipments

Please inspect your order upon delivery.

If you notice any damage:

  • note it with the carrier before signing
  • or refuse the delivery if damage is severe

If you accept the delivery:

👉 Take clear photos of:

  • the packaging
  • the damaged product

Then email us immediately at:

👉 support@clearflowpoolsupply.com

We will work with you quickly to resolve the issue.


Returns

For full details on returns, please visit our Returns Policy page.

Why Buy from Us

Why Buy From Us

We understand—you have options when it comes to buying pool equipment online.

At ClearFlow Pool Supply, our goal is simple:

👉 provide reliable products
👉 offer a straightforward buying experience
👉 and support you every step of the way

Here’s what sets us apart.


Free Shipping Across the U.S.

No hidden fees. No surprises.

All orders ship free within the United States, including large and heavy equipment.


Competitive Pricing

We work to offer strong, competitive pricing across our entire catalog.

If you find the same product available online at a lower total price, feel free to reach out—we’re happy to review it.


30-Day Return Policy

If your product isn’t the right fit, we offer a 30-day return window.

We aim to make the process as simple and straightforward as possible.
(See our Returns Policy for full details.)


Reliable Equipment

We focus on products that matter:

  • durable
  • proven
  • built for long-term use

Our goal is to help you avoid the frustration of unreliable or low-quality equipment.


Customer-Focused Support

We’re here to help before and after your purchase.

Whether you’re:

  • replacing a component
  • upgrading your system
  • or choosing equipment for the first time

👉 we’re here to make the process easier


Our Commitment

We stand behind what we sell.

If something isn’t right, we’ll work with you to resolve it quickly and fairly.


Price Match Policy

If you find the same product offered at a lower total price (including shipping), contact us at:

👉 support@clearflowpoolsupply.com

We’ll review the offer and do our best to match it.

Description
✓ Authorized Dealer ✓ Free Shipping ✓ Manufacturer Warranty ✓ Expert Support

The Hayward Pro Series 30" Side Mount Sand Filter without Valve (W3S310S) is the tank-only version of the ProSeries 30-inch side-mount sand filter — ideal for replacements where the existing side-mount VariFlo valve is being reused, or for new installations where the valve is specified separately. The ProSeries umbrella-fold self-cleaning lateral system provides efficient flow and totally balanced backwashing for long-lasting performance.

Features 360 slotted self-cleaning laterals, integral top diffuser for even water distribution, integral molded drain plug, corrosion-proof polymer tank, and flanged inspection/access cover for easy top-of-filter access. Backed by a 1-year warranty.

Note: No valve included. Filter sand not included. A compatible Hayward VariFlo side-mount valve must be purchased separately.

Key Features

Tank Only — Reuse Existing Valve

Perfect for tank replacements when the existing side-mount VariFlo valve is in good condition and will be reused.

360-Slot Umbrella-Fold Self-Cleaning Laterals

Multilateral underdrain assembly with 360 slotted laterals provides totally balanced flow and backwashing.

Integral Top Diffuser

Ensures even distribution of water over the top of the sand media bed for consistent filtration.

Integral Molded Drain Plug

Easy tank draining without loss of sand.

Flanged Inspection/Access Cover

Convenient top-of-filter access for inspection and sand changes.

Corrosion-Proof Tank / 1-Year Warranty

Durable color-fast polymeric construction, Hayward warranty.

Specifications

Performance

Filtration Area 4.91 sq ft
Filter Type Side-Mount Sand (No Valve)
Max Working Pressure 50 PSI

Tank

Tank Diameter 30 in
Lateral System 360-Slot Umbrella-Fold Self-Cleaning
Base Material Injection-Molded Polymer
Mounting Side Mount
Side Clearance Required 18 in
Vertical Clearance Required 18 in

Physical

Product Weight 83 lb
Shipping Dimensions 32 × 32 × 48.3 in

Approvals & Warranty

Application In-Ground Pool / Spa / Ponds
Warranty 1 Year

What's in the Box

  • Hayward Pro Series W3S310S 30" Sand Filter Tank (No Valve)
  • User Manual

Note: No valve included. Filter sand not included. A compatible Hayward VariFlo side-mount valve must be purchased separately.

Warranty

The Hayward Pro Series W3S310S comes with a 1-year manufacturer warranty. Clearflow Pool Supply is an authorized Hayward dealer and will assist with any warranty service needed.

Shipping

Shipping Policy

At ClearFlow Pool Supply, we keep things simple.

👉 Free shipping on all orders within the United States.
No hidden fees. No surprises.


Order Confirmation

As soon as you place your order, you’ll receive an order confirmation email.

This means:

  • we’ve received your order
  • your payment method has been pre-authorized

Once your order is in our system, we verify:

  • product availability
  • inventory status with our suppliers

If an item is unavailable or backordered, we will:

  • void the pre-authorization
  • contact you promptly to discuss alternatives

If your item is in stock and ready to ship (typically within 3–5 business days), your order will be processed and prepared for shipment.


Order Shipment

Orders that are in stock will typically ship within 3 business days.

You will receive a shipping confirmation email with tracking details within 24 hours of your order leaving the warehouse.

If you do not receive tracking information within 4 business days, please contact us at:

👉 support@clearflowpoolsupply.com 


Shipping Scope

We currently ship to customers within the United States.

Due to the size and nature of many pool equipment products, some orders may ship via freight carriers. Delivery times may vary depending on location and product availability.


International Orders

At this time, our products are designed and configured for the U.S. market, operating on 110V electrical systems and meeting U.S. safety standards.

We may be able to accommodate international orders on a case-by-case basis.
If you are located outside the United States, please contact us to request a custom shipping quote.


Damaged Shipments

Please inspect your order upon delivery.

If you notice any damage:

  • note it with the carrier before signing
  • or refuse the delivery if damage is severe

If you accept the delivery:

👉 Take clear photos of:

  • the packaging
  • the damaged product

Then email us immediately at:

👉 support@clearflowpoolsupply.com

We will work with you quickly to resolve the issue.


Returns

For full details on returns, please visit our Returns Policy page.

Why Buy from Us

Why Buy From Us

We understand—you have options when it comes to buying pool equipment online.

At ClearFlow Pool Supply, our goal is simple:

👉 provide reliable products
👉 offer a straightforward buying experience
👉 and support you every step of the way

Here’s what sets us apart.


Free Shipping Across the U.S.

No hidden fees. No surprises.

All orders ship free within the United States, including large and heavy equipment.


Competitive Pricing

We work to offer strong, competitive pricing across our entire catalog.

If you find the same product available online at a lower total price, feel free to reach out—we’re happy to review it.


30-Day Return Policy

If your product isn’t the right fit, we offer a 30-day return window.

We aim to make the process as simple and straightforward as possible.
(See our Returns Policy for full details.)


Reliable Equipment

We focus on products that matter:

  • durable
  • proven
  • built for long-term use

Our goal is to help you avoid the frustration of unreliable or low-quality equipment.


Customer-Focused Support

We’re here to help before and after your purchase.

Whether you’re:

  • replacing a component
  • upgrading your system
  • or choosing equipment for the first time

👉 we’re here to make the process easier


Our Commitment

We stand behind what we sell.

If something isn’t right, we’ll work with you to resolve it quickly and fairly.


Price Match Policy

If you find the same product offered at a lower total price (including shipping), contact us at:

👉 support@clearflowpoolsupply.com

We’ll review the offer and do our best to match it.