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WellMate Tanks Feature And Benefits

The WellMate “WM” captive air tank series are the ideal choice for new and replacement installations for residential, light commercial and pressure boosting applications.


The WM-Series offers features and benefits steel tanks just can’t match. From their corrosion-proof composite construction... to their lighter weight, easier maintenance and less expensive installation… WM-Series pressure tanks are the preferred choice of professionals. Especially when the following advantages are added to the mix: • Replaceable Air Cell — for easier field servicing. • Greater Drawdown than Comparably-Sized Steel Tanks — for greater efficiency. • Extended Labor Warranty Option (by homeowner). • Won’t Rust in Corrosive Environments — particularly important in agricultural and livestock applications, and coastal regions. • Quicker and Less Costly to Install — usually requiring only one person and fewer man-hours. • Wider Pressure Setting Differential — for greater flexibility.



Features and Benefits

  • Corrosion-proof composite construction
    • One piece, seamless inner shell molded of premium high-density polyethylene
    • Durable blow-molded interior air cell is fully replaceable and constructed of heavy-gauge engineered polymer
    • Bottom inlet/outlet assembly is custom molded of high-impact PVC
    • Sturdy molded polymeric base is corrosion and impact proof
    • Outer shell is a composite of continuous fiberglass strands sealed with high-grade epoxy resin
  • Replaceable Air Cell
  • Greater drawdown than comparably sized steel tanks for greater efficienc
  • The entire range of WellMate Residential Captive Air tanks are listed under ANSI / NSF Standard 61 for water system components.
  • Factory backed five year warranty from date of installation.
  • Light Weight – minimizes labor cost; no need for heavy equipment


WellMate WM- Series Performance Data
Model Gallons Drawdown* Gallons Dia. Inches Height Inches Connection
To Floor
Pipe MNPT Weight Lbs.
WM-6 19.5 5.9 16 32 1-3/4" 1" 17.75
WM-9 29.5 8.9 16 44 1-3/4" 1" 24.75
WM-14WB 47.1 14.1 21 41-1/4 2-1/4" 1-1/4" 43.00
WM-25WB 86.7 26.0 24 55-1/4 2-1/4" 1-1/4" 72.75
WM-35WB 119.7 35.9 24 74-1/4 2-1/4" 1-1/4" 95.00
Maximum pressure 100 PSI for WM-6 to WM-12, 125 PSI for WM14-WB to WM35-WB
* Drawdown in gallons for 30/50 PSI pressure switch setting