Bell & Gossett 1BN331 HFT-40V Floor Standing HVAC Diaphragm Expansion Tank 20 Gallon
Not For Potable (Domestic/Drinking) Water Systems
Specifications
System Connection 1” FNPT
Factory Precharge Pressure: 12 PSI
Tank Volume Gallons (Liters) 20 (76)
Acceptance Volume Gallons (Liters) 11.3 (43)
Charging Valve .305"−32 NC
Diameter Inches (MM) 15-3/8 (390)
Height Inches (MM) 32-1/2 (826)
Maximum Design Pressure: 100 PSI (689 kPa)
Maximum Design Temperature: 240°F (115 °C)
Construction
Shell: Carbon Steel
Diaphragm: Heavy Duty Butyl Rubber
Series "HFT" diaphragm-type expansion tanks are precharged to 12 PSI. The Series "HFT" tank is designed to absorb the force of thermal expansion when heating water and to maintain proper pressurization in a closed hydronic system. The heavy-duty butyl diaphragm separates system water from the air in the tank thereby preventing waterlogging problems.
