Nelsen 12x48 Std Filter Tank w/By-Pass

The Nelsen 12x48 Standard Filter Tank with Bypass is a complete, backwash-only filtration platform ready to be loaded with the media of your choice. Built around a durable 12-inch by 48-inch black polyglass mineral tank, this system arrives equipped with a Fleck 5810 SXT control valve, basket riser, gravel underbed, and an included bypass, giving installers a solid, ready-to-customize foundation for a whole-house filter without sourcing each component separately.

What's Included

As an automatic backwash-only filter, this unit periodically reverses flow to lift and rinse accumulated contaminants from the media bed, refreshing the media's capacity without the brine regeneration a softener requires. The Fleck 5810 SXT valve provides reliable, programmable control of the backwash cycle, while the gravel underbed supports even flow distribution and the basket riser protects the distribution system from media intrusion. The bundled bypass makes it easy to isolate the unit for service without shutting off water to the entire home.

• 12-inch x 48-inch black polyglass mineral tank
• Fleck 5810 SXT automatic backwash control valve
• Basket riser and gravel underbed included
• Bypass valve included for easy service isolation
• Automatic backwash-only operation (no brine cycle required)
• Item weight: 56.00 lbs each (media ordered separately)

This tank is the versatile starting point for a range of whole-house filtration goals. Simply add the appropriate filter media, such as carbon for chlorine and taste/odor reduction or a specialty media for iron or sediment, along with your plumbing connections, both of which are ordered separately to match your specific water quality and installation. When setting backwash frequency, base the timer on your water usage and the type of media loaded so the bed stays clean without wasting water, and confirm your drain line can handle the backwash flow rate the tank diameter calls for. The 12x48 size is a popular choice for typical single-family homes, offering enough media volume for good contact time while keeping the footprint manageable in a garage, basement, or utility room. During commissioning, run an initial backwash to rinse fines from fresh media and settle the bed before placing the system into service, and plan for periodic checks of the valve programming and bed condition. For installers and homeowners building a customized backwash filter on a trusted Nelsen and Fleck platform, this 12x48 tank-and-valve package delivers dependable performance, broad parts support, and straightforward setup that pays off for years.