Brine Tank Asm. 18x33 Blue w/500 Air Ck

Add a pop of color and complete functionality with the Nelsen 18" x 33" Round Blue Brine Tank Assembly featuring a Fleck 500 Air Check. This install-ready reservoir combines a durable blue polyethylene tank with the air-check component that keeps air out of your resin bed during regeneration. Because it ships as a matched set, getting your softener back online is fast and straightforward, with no loose parts to source.

How the Air Check Helps

The Fleck 500 air check sits in the brine line and seals off air at the end of the brine draw. By preventing air from entering the resin tank, it protects each regeneration cycle from interruption and helps avoid issues like waterlogging or inconsistent softening. It's a small part that plays a big role in clean, repeatable operation, which is why so many residential systems are designed around an air-check draw.

• Round blue polyethylene brine tank with cover
• 4" brine well with cap
• Fleck 500 air check for the brine line
• Brine overflow elbow and connecting tubing
• Distinctive blue finish

The 18x33 round size is a residential favorite, offering plenty of salt storage for everyday household hardness removal in an easy-to-fit footprint that works in basements, garages, and utility rooms. Because the brine tank holds the salt and brine solution that recharges your resin, a sound, watertight tank directly supports softening performance and protects against leaks. Maintain it by keeping salt above the water line, watching for salt bridging along the walls, and rinsing out sediment periodically. From Water Softener Plus on the proven Nelsen platform, this blue assembly is a fresh, dependable replacement that works with most standard softener control valves.

To round out the picture, here is some added context. Hard water leaves scale in pipes and water heaters, spots on glassware, and a filmy feel on skin and hair. This brine tank is a key part of the system that solves those problems, supplying the salt brine that keeps your resin working. With proper salt selection and routine checks, it supports reliable softening that protects appliances and improves the feel of every shower, load of laundry, and glass of water.