説明
This control valve manages the backwash and regeneration cycles of your water softener or filter system. It directs water flow to keep treated water available continuously by switching between tanks without downtime, suited for high-demand setups.
The problem you’re facing
Your softener or filter needs a reliable way to switch between cleaning one tank and using another so you never run out of treated water. Without this, you might experience interruptions—hard water during regeneration—or your system may not clean itself fully, letting scale or contaminants build up.
Why this happens
Water softeners and filters work by cycling through service and regeneration phases. During regeneration, the system cleans its media to restore effectiveness. Without a proper control valve, your system can’t easily switch flow between tanks. That leads to gaps where untreated water flows to your home or interruption in service.
What you lose by leaving it
If the control valve doesn’t switch correctly, hard water can reach your faucets during regeneration. Scale deposits may build on plumbing and appliances, cutting their lifespan. Cleaning and maintenance become more frequent and costly, and your system’s efficiency drops, using more salt or chemicals than needed.
How this valve fixes the issue
This motorized valve uses a large bore 3-inch flow path to automatically alternate service flow between two or more tanks. It cycles one tank offline for cleaning while keeping another in service. This way, your treated water supply doesn’t stop, and each tank regenerates properly without manual intervention.
What this valve can handle
Built for commercial and industrial water treatment, it suits high-demand situations needing continuous supply. Its large 3-inch passage handles substantial water flow without restricting pressure. It’s designed to work with Nelsen WS3-series control systems and can manage twin-tank or multi-tank configurations where uninterrupted soft water or filtered water is essential.
What you actually get
You receive the WS3 3-inch motorized alternating valve, a genuine Nelsen component. The valve body and motor drive weigh about 3.8 kilograms. It’s engineered specifically for WS3 platforms, matching pipe size and control requirements for your system’s setup.
Is this the right size for you?
This valve fits systems where continuous treated water is a must and where regeneration downtime isn’t acceptable. If your setup runs on smaller pipe sizes or single-tank softeners and filters, this valve may be oversized. Confirm your existing system’s compatibility before moving forward.
Living with it
Once installed by your licensed plumber, the valve requires minimal routine attention. Regular system maintenance as recommended for your softener or filter applies; the valve itself is durable and designed to work reliably under heavy use. Keep your plumber informed for any diagnostic checks if performance issues arise.
What it won’t do
This valve doesn’t soften or filter water by itself. It does not remove bacteria, sediment, or chemical contaminants on its own. For those needs, you’ll need complete softener or filtration systems that include media tanks and treatment components. This valve simply controls flow within those systems.
Why buy it from Water Softener Plus?
We provide genuine, serviceable components that fit established commercial platforms. Our parts remain available years after purchase, avoiding sealed, disposable units. Shipping is free from Tampa, Florida, and we help you size your system correctly with no-pressure, honest advice. We back our supply with a 90-day money-back guarantee to support your confidence.
Specifications
| Type | Control Valve |
|---|---|
| WSP SKU | WSP-CV-CLMAV30 |
| Shipping | Free U.S. shipping, included in the price |
| Ships from | Tampa, Florida |
| Returns | 90-day money-back guarantee |
The next step
Contact the WSP team for a free quote and sizing assistance. Tell us about your water problem and your ZIP code, and we’ll confirm the right valve configuration for your setup and send pricing details. We’re here to help you get the reliable, continuous water treatment your property requires.
Overview
- 🇺🇸 U.S.-based support and expert assistance
- 🔧 Built with trusted, industry-standard components
- 🚚 Ships nationwide - freight-safe packaging
- 🏠 Ideal for residential and light-commercial systems
Specs (Typical)
| Max Operating Pressure | 125 psi |
|---|---|
| Max Water Temp | 100 °F |
| Electrical | 120 V AC |
| Flow Range | 5-45 GPM (model dependent) |
Related: Control Valves . Parts . Get sizing help

