Nelsen 30" x 72" Filter Unit

The Nelsen 30" x 72" Filter Unit is a heavy-duty backwashing filtration system built for commercial and industrial water treatment. At its core is the Nelsen WS1.5EE 1-1/2" control valve, a lead-free brass platform engineered to manage demanding service schedules with precision and long-term reliability.

This configuration delivers a service flow rate of 60 gpm and backwashes at 50 gpm, making it well matched to office buildings, light manufacturing, restaurants, and similar facilities. The 30" x 72" mineral tank is packed with commercial distributors and a graded gravel bed, and you choose the filter media to suit your water chemistry.

Intelligent control and regeneration

• 2" top-mount control valve suited for commercial and industrial duty
• Solid-state microprocessor with easy-access front-panel settings and a totalizer display for time of day, days to regeneration, volume remaining, and current flow
• Flexible regeneration: meter immediate, meter delayed, or time-clock delayed
• Fully adjustable 6-cycle control with controlled backwash, optional double backwash, fast rinse, refill, and down-flow service
• Coin-cell lithium battery backup providing an 8-hour carryover during power loss
• Proven DC drive and 12-volt AC adapter for safe, straightforward installation

The optional double backwash feature lifts and cleans the media more thoroughly, extending media life and protecting downstream equipment from fouling. Because the system regenerates with post-treated water, refill quality stays consistent. For facility managers who need dependable, automated filtration with full visibility into operation, this Nelsen unit pairs trusted Nelsen control technology with a robust commercial tank platform. Weighing roughly 584 lbs as configured, it is a substantial, install-once solution for serious water treatment requirements.

How a backwashing filter like this works is straightforward in principle: during service, water flows downward through the media bed, which captures the targeted contaminants. When the controller initiates regeneration, the flow reverses to lift, expand, and rinse the bed, flushing trapped particles to drain so the media is renewed for the next service run. Because the operator selects the media, the same Nelsen tank-and-valve platform can be redeployed if water conditions change over time. For installers, the front-panel programming and totalizer reporting simplify commissioning and ongoing service, while the heavy commercial vessel and lead-free brass valve are chosen for years of dependable, low-fuss operation. It is a practical foundation for any facility that values transparent, automated filtration sized for real commercial flow.