Nelsen 21x62 Filter Unit

Engineered for serious flow demands, the Nelsen 21x62 Filter Unit is a commercial backwash-only filtration system built around a large 21" x 62" natural polyglass mineral tank. It is designed for light commercial installations, larger facilities, and high-usage properties that need robust, automated filtration capable of keeping up with elevated water demand throughout the day.

• Large 21" x 62" natural polyglass mineral tank for high capacity
• Nelsen C-Series EE 1" 3-cycle backwash valve mounted on top
• Bypass valve included for convenient servicing
• Stack distributor and gravel bed for uniform distribution
• Heavy-duty unit weighing approximately 238 lbs
• Filter media and plumbing connections ordered separately

The top-mounted Nelsen C-Series control valve automates the three-cycle backwash process, periodically reversing flow to lift and rinse away trapped sediment and keep the media bed performing at its best. A stack distributor paired with a gravel support bed ensures water moves evenly through the full depth of media, which is critical in a tank of this size for both treatment effectiveness and proper backwashing. The included bypass valve lets operators isolate the unit for maintenance with minimal disruption to the facility's water supply.

Because media is chosen separately, this Nelsen filter adapts to a wide range of commercial water-treatment goals, from sediment control to taste and odor reduction with activated carbon. The generous diameter delivers the surface area and contact time that high-flow applications require, while automated backwashing keeps operator involvement low. Combined with the right media and plumbing connections, the 21x62 backwashing filter offers facility managers and installers a durable, low-maintenance solution for delivering cleaner water at scale. It is a dependable workhorse for commercial filtration projects from a respected water treatment manufacturer.

Proper installation and a drain line of adequate size will ensure backwash cycles run effectively, carrying flushed particulate away without restriction. With the right media selected for your water test results, this Nelsen platform delivers years of dependable service while keeping operating costs low and water quality high throughout the home. As a trusted Nelsen system paired with proven Nelsen control hardware, it brings professional-grade filtration within reach of homeowners and installers alike.