Structural (BT-1840-BK) 18" X 40" Round Brine Tank Black
18" X 40" Round Brine Tank BT-1840-BK
Commercial-grade polyethylene brine tank designed for residential and light commercial water softener installations requiring reliable salt storage and brine solution preparation
Built for Dependable Brine Generation
High-Density Polyethylene
Seamless rotationally molded construction resists corrosion, stress cracking, and chemical degradation from concentrated salt solutions over decades of continuous use
18" x 40" Dimensions
Compact footprint fits standard utility closets and mechanical rooms while providing sufficient salt capacity for typical residential regeneration cycles
Black UV-Resistant Finish
Factory pigmented black resin protects against UV degradation and maintains appearance in installations with ambient light exposure
Universal Valve Compatibility
Standard round opening accepts most brine valve assemblies from major control valve manufacturers including Clack, Fleck, Autotrol, and Structural
Softener System Integration
The Structural BT-1840-BK brine tank is designed for use with water softener control valves requiring external brine storage. Compatible with softener systems ranging from 0.75 to 1.5 cubic feet of resin capacity. Requires separate purchase of safety brine valve assembly, brine line tubing, and overflow fitting. Works with pellet, solar, or block salt formulations. Standard round tank design integrates with Clack WS1, Fleck 5600SXT, Fleck 7000SXT, Autotrol 255/460i, and Structural brand control heads.
Tank Details
| Model Number | BT-1840-BK |
| Dimensions | 18" diameter x 40" height |
| Material | High-density polyethylene (HDPE) |
| Color | Black |
| Construction | Seamless rotational molding |
| Salt Capacity | Approximately 200 lbs |
| Valve Assembly | Not included (sold separately) |
| Wall Thickness | 0.25" average |
No-Seam Construction
Eliminates leak points and structural weak spots common in welded or multi-piece tank designs
NSF Material Standards
Manufactured from virgin polyethylene resin suitable for potable water contact applications
Long Service Life
Engineered for 15-20+ years of maintenance-free salt storage with proper installation and use
Field Serviceable
Accepts replacement valve assemblies and fittings without specialized tools or tank replacement
