12500 GPD Comm RO

For operations that need large-scale purified water with uncomplicated controls, the Nelsen 12500 GPD Commercial Reverse Osmosis system delivers roughly 12,500 gallons per day from five 4x40 membranes, driven by a 220 volt pump and solenoid. This floor-stand unit gives high-demand facilities the throughput they require while keeping the control scheme straightforward and easy to maintain.

High Volume, Simple Controls

Five 4 inch by 40 inch membranes on the 440 series platform provide the production capacity, working together to reject dissolved solids and contaminants as pressurized feed water crosses each membrane. The 220 volt pump and solenoid arrangement keeps the system design clean, relying on pressure and level controls rather than an integrated electronic controller. For operators comfortable managing RO through conventional switches, this is a cost-effective path to substantial daily output.

• Approximately 12,500 gallons per day of purified water
• Five 4 inch by 40 inch membranes on the 440 series platform
• 220 volt pump and solenoid for production and control
• Floor-stand frame, around 200 pounds as a complete unit
• Switch-based operation without an electronic controller
• Designed for high-volume commercial and process demand

Facilities such as food and beverage production, large car washes, greenhouses, agricultural users, and industrial process or makeup water applications benefit from this level of capacity. Supplying low-TDS water across a busy operation reduces scale buildup, spotting, and contaminant load on downstream equipment, supporting both product quality and the longevity of the machinery that depends on clean feed water to run trouble-free.

Protecting a five-membrane bank calls for serious pretreatment. Feed water should be dechlorinated and clarified of sediment, and kept within recommended hardness, temperature, and pressure ranges to avoid premature fouling or membrane damage. A water analysis prior to installation guides pretreatment design and helps set accurate production expectations. With diligent prefilter maintenance and periodic membrane monitoring, the Nelsen 12500 GPD floor-stand RO supplies dependable, high-volume purified water at an attractive value, giving facilities a robust and economical option when they need major capacity without the cost or added complexity of an onboard electronic control package for their water treatment operation. Since the system runs on conventional pressure and level controls, staff should understand how those switches govern production and shutdown, and keeping a basic stock of spare prefilters and seals nearby helps ensure routine service can be finished quickly without leaving the facility short of purified water during a demanding production run.