NWS 13x54 Filter Unit w/Bypass

The NWS 13x54 Filter Unit with Bypass, alternate part NWTS-AFB-13, is a high-capacity backwashing filtration platform from Nelsen Water Treatment Solutions, built on the popular 13x54 whole-house tank size. With more media volume than smaller units, it is well suited to larger homes or applications that demand longer service runs between backwash cycles, making it a strong choice where higher flow and capacity are priorities and where a smaller tank would regenerate too frequently to keep up.

The assembly includes Nelsen's 1" three-cycle backwash filter valve, a bypass valve for simple service isolation, a black polyglass mineral tank, a basket distributor, and a gravel underbed for media support and even flow distribution. As with the rest of the AFB line, it ships as a hardware base—the filter media and plumbing connections are ordered separately so you can match the system precisely to your water chemistry and treatment goals rather than settling for a one-size-fits-all configuration.

• 13x54 black polyglass mineral tank for high capacity
• Nelsen 1" three-cycle backwash filter control valve
• Bypass valve for simple service isolation
• Basket distributor and gravel underbed included
• Filter media and plumbing connections sold separately
• Approximately 94 lbs as configured

Configuration guidance

To get the best results, pick a backwash-compatible media suited to your specific contaminants—carbon, sediment, iron, or pH-correction media are common options—then set the valve's cycle timing to match your flow rate and water load. Confirm that your drain can handle the larger backwash volume this tank produces, since a high-capacity column moves more water during its cleaning cycle than a smaller unit. Proper media selection, cycle programming, and drain sizing together determine how well and how long the filter performs. At roughly 94 lbs as configured, the 13x54 is a robust, flexible choice for whole-house filtration in larger households that need both capacity and dependable, low-attention operation, and the popular tank size keeps replacement parts and media widely available down the road. Built on a popular, well-supported tank size, the 13x54 AFB unit pairs high capacity with long-term parts availability, making it a smart choice for larger homes. Its capacity and longevity make it a confident choice for homes with real demand.