Polyglass Vessels

The ideal pressure vessel for residential and light commercial water softener/filtration applications. Structural Poly Glass™ Pressure Vessels provide years of reliable service for water conditioning and filtration applications. These slim diameter tanks hold up to 49 gallons of water and offer unmatched strength and chemical resistance.


  • Slim diameter with capacities from 2 to 49 gallons
  • Unmatched for strength and chemical resistance
  • 10-year warranty for 6″ -13″ vessels
  • 5-year warranty for 14″ – 16″ vessels
  • Materials of construction
    • Inner shell of polyethylene
    • Threaded inlet available in various sizes



Safety factor: 4:1
Minimum burst at 600 psi
Tested to 250,000 cycles without leakage


Safety factor: 4:1
Minimum burst at 600 psi
Tested to 100,000 cycles without leakage

Residential tanks 6″-16″ in diameter are Certified to NSF 44

Maximum operating pressure: 150 psi
Maximum operating temperature: 120° F\


Vessels tested and certified by the Water Quality Association (WQA) to NSF/ANSI Std. 44 for material safety and structural integrity requirements and Std. 372 for low lead compliance.