21 & 24 Fiberglass Tanks - Tri Unit Ski

The 21" & 24" Fiberglass Tanks Tri-Unit Skid from Water Softener Plus is a pre-configured mounting platform that organizes three fiberglass treatment tanks—sized for 21- and 24-inch vessels—into a single commercial triplex assembly. It is also engineered to accommodate quadplex systems, giving facilities a clear path to scale their treatment capacity as demand grows over time.

Built around fiberglass tanks

Fiberglass-reinforced tanks are a popular choice in commercial water treatment because they resist corrosion inside and out, hold up well to the demands of softening and filtration chemistry, and pair cleanly with high-flow control valves. Mounting three of them on a coordinated skid means the tanks are positioned, supported, and ready to plumb as a single unit, which eliminates the guesswork and improvised bracketry of a field-built rack. The result is a faster, cleaner installation and a system that looks and operates like the professional setup it is.

• Carries three 21"/24" fiberglass treatment tanks
• Triplex layout for high-demand continuous service
• Also supports quadplex system expansion
• Corrosion-resistant fiberglass tank compatibility
• Coordinated mounting with a predictable footprint
• Pre-engineered commercial system skid platform

The advantage of a triplex arrangement is sustained capacity. With three tanks in rotation, the system maintains treated-water output even while one tank is regenerating, and it spreads the service load to lengthen the intervals between regenerations and extend overall media life. That makes it well suited to facilities with steady, high-volume water demand—laundries, processing operations, multi-unit residential, and similar applications. A triplex layout also adds resilience: if one tank is taken offline for media replacement or valve service, the remaining two can continue treating water rather than shutting the whole facility down. By starting from a professionally configured skid, installers save significant time on layout and plumbing while gaining a clean, serviceable footprint with room to reach valves, distributors, and connections. When sizing such a system, designers weigh peak instantaneous flow against total daily volume and the hardness or contaminant load of the source water, then divide that duty across the three tanks so no single vessel is run past its rated flow. Combine this 21"/24" fiberglass tri-unit skid with correctly sized valves, media, and brine equipment to build a high-capacity commercial treatment train that runs reliably for years, and confirm the drain and incoming line can support the backwash flow the tanks will draw.