15000 GPD RO, 6 4x40 Mmbrn Cntrl AF PPG

At the top end of Nelsen's floor-stand RO lineup, the 15000 GPD Reverse Osmosis system combines six 4x40 membranes with an NRO ROC2 controller, automatic flush, and pre and post filter gauges. Producing about 15,000 gallons per day on 220 volt power throughout, this fully featured unit is built for the most demanding commercial and industrial purified-water applications.

Maximum Capacity, Full Instrumentation

Six 4 inch by 40 inch membranes on the 440 series platform give this system its formidable output, while the NRO ROC2 controller manages production, flushing, and shutdown for protection and consistency. The automatic flush routine periodically rinses the membrane bank to limit fouling and extend membrane life, and the pre and post filter gauges let operators read the pressure differential across filtration at a glance, making prefilter maintenance proactive rather than reactive.

• Approximately 15,000 gallons per day of purified water
• Six 4 inch by 40 inch membranes on the 440 series platform
• NRO ROC2 controller for automated process management
• Automatic flush to reduce fouling and protect membranes
• Pre and post filter gauges for clear maintenance feedback
• 220 volt throughout; floor stand, around 230 pounds complete

This capacity tier serves large beverage and food production, high-throughput car washes, extensive greenhouse and agricultural operations, laboratories, and industrial process or makeup water where reliability and water quality are mission-critical. The pairing of automated control, automatic flushing, and visible gauges equips staff to keep a large membrane bank running efficiently and to detect developing issues well before they affect production or shorten equipment life.

With six membranes representing a significant investment, comprehensive pretreatment is essential. Feed water must be dechlorinated and clarified, and maintained within recommended hardness, temperature, and pressure ranges so the membranes stay protected during continuous service. A detailed water analysis before installation informs pretreatment design and validates expected output. Backed by gauge-guided prefilter maintenance and routine membrane monitoring, the Nelsen 15000 GPD controller-equipped RO with auto flush delivers the very high-volume purified water and operational visibility that the most demanding facilities require, making it a flagship choice for operations that depend on substantial, consistent purified water output every single day of the year. Given its capacity, the installation deserves careful planning around a sturdy floor location, a clean 220 volt feed, and a well-sized concentrate drain, while generous clearance around all six membranes keeps inspection and eventual element replacement manageable for the service team that maintains this sizable system over its working life.