Nelsen 300,000 Grain Metered Commercial (NWS15PLM) Water Softener

The Nelsen Water Solutions NWS15PLM 300K Meter Mineral Tank System is a heavy-hitting softener designed for the highest residential demands and light commercial duty. With a full 300,000 grains of capacity housed in a single mineral tank, it tackles severe hardness loads while its 1-1/2" composite plastic metered control valve regenerates strictly on measured water usage rather than a fixed timer. This makes it an efficient performer even in properties where consumption swings widely from day to day.

That demand-initiated approach is what sets metered systems apart. By counting actual gallons treated, the valve avoids wasteful regenerations during low-use periods and ensures soft water is always available during peak draw. The composite valve construction stands up to continuous service without the corrosion risk of metal components, making it a dependable choice for estates, agricultural operations, and small commercial facilities battling scale. Reliable softening at this scale protects not only household plumbing but also expensive water-using equipment from the gradual damage that hard water inflicts.

What's included

• 300,000 grain total softening capacity
• Nelsen 1-1/2" composite metered control valve
• Commercial distributors for even flow across the bed
• Gravel underbed and high-capacity softening resin
• Single-tank design for a streamlined footprint
• Approximately 907 lbs weight per system

Order the brine tank separately to match your salt reserve to the system's regeneration volume. If you are building a Progressive Flow installation, add one CL-COM-34-12 communication cord for the system, one CL15 quick connect x quick connect, and one CL-NHBP-15 no-hard-water bypass for each valve. Inside the tank, the supporting gravel bed prevents channeling while the high-capacity resin performs the ion exchange that removes calcium and magnesium. From scale-free plumbing to longer appliance life and noticeably softer water, the NWS15PLM 300K from Water Softener Plus brings commercial-grade capacity to demanding hard-water environments in a single, manageable tank.

Given the substantial weight and volume of media in a 300K system, allow adequate floor support and clearance at the install site, and verify your drain and supply connections can handle the flow. Properly set up, the metered valve handles regeneration automatically, freeing the owner from manual scheduling while delivering reliably soft water across a high-demand property. For estates, farms, and small commercial sites facing relentless hardness, the NWS15PLM 300K stands ready to deliver.