Skip to content
  1. Poolweb
  2. White Goods
  3. Main Drains
  4. Poolweb #MLD-SG-0909-WT2
9 Inch Square SuperSump Main Drain Sump With 4 Inch Port (Pack of 2) 9 Inch Square SuperSump Main Drain Sump With 4 Inch Port (Pack of 2) 9 Inch Square SuperSump Main Drain Sump With 4 Inch Port (Pack of 2) 9 Inch Square SuperSump Main Drain Sump With 4 Inch Port (Pack of 2)
  • Product image 1 of 4
  • Product image 2 of 4
  • Product image 3 of 4
  • Product image 4 of 4
  • View in 360 degrees!
Neptune Benson
Poolweb #MLD-SG-0909-WT2

9 Inch Square SuperSump Main Drain Sump With 4 Inch Port (Pack of 2)

Write a Review

Please call us at 1-800-446-6416 so that we can get you the best possible price for this product!

Shipping Options

  • Standard Shipping, $6.95 Get it by
  • 2 Day Shipping, Get it by
  • 1 Day Shipping, Get it by

Shopper Protection

Product Information


This is a package of two 9 inch Square SuperSump Main Drain Sumps with 4 inch port. They have an open area of 42.12 square inches and 261 GPM Floor. The Neptune Benson (Evoqua) SuperFlow Sumps are ASME-2007 and NSF listed. The SuperSump main drain system eliminates the need for certification of field-formed sumps by a licensed design professional. The SuperSump with SuperFlow main drain grating is pre-certified which allows you to move forward with construction and avoid the unnecessary delay of field inspection and concrete sumps. Add to this the highest flow rate for maximum efficiency, a long list of benefits and advantages, and you have a main drain system that will give you peace of mind.

The SuperSump Main Drain System features a unique built-in water stop with two vertical extensions. This prevents water passing over the flange. They also have internal plumbing fittings instead of external. This allows stacking and avoids breaking off or cracking during shipment, pressure testing or handling.

The SuperSumps are a solid, injection molded unit which is less expensive than stainless steel or fiberglass. They have a tapered body for strength and durability. It allows for water expansion during freezing.

Hydrostatic relief valves and collector tubes are sold separately. Two hydrostatic relief valves per sump are required (see #170SP-10560). Four collector tubes are required per sump (see #170SP-1055). Evoqua offers a variety of main drain solutions in order to meet the Virginia Graeme Baker Pool and Spa Safety Act starting in 2008. NSF tested and ASME LISTED, SuperFlow grates are the only choice for retrofitting your main drains or constructing your new pool.

Product Features

  • Open Area: 42.12 square inches.
  • Size: 9 x 9 inch.
  • Floor GPM: 261; Wall GPM: 248.
  • Side Port 4 inches.
  • Unique built-in water stop with two vertical extensions.
  • A solid one-piece, injection-molded unit
  • Tapered body for strength
  • Allows for water expansion during freezing

Technical Specifications

Product CategoryMain Drains
Poolweb Item #MLD-SG-0909-WT2
Cross Reference #MLD-SG-0909
ManufacturerNeptune Benson
Shipping Weight20.0 lb

Shipping & Returns

Shipping Options

Ship MethodCostArrival
Standard Shipping $6.95 Get it by
2 Day ShippingGet it by
1 Day ShippingGet it by

Standard ground shipments may be delivered sooner depending on where you are located, and the shipping method used to ship your order. Combining multiple items onto the same order can change the delivery date and expedited shipping costs, especially if the other items are not available for immediate shipment. Transit time is calculated in business days and does not include Saturday and Sunday.

Return Policy

This item can be returned within 30 days of order. See return policy for details and how to place a return.

Poolweb Guarantee

This item qualifies for a one-year guarantee. Poolweb guarantees that the item you receive will function as advertised for one year. See the Poolweb Guarantee for more details.

We Also Recommend...

Product Reviews

Customer Questions