The HGT-90 from Calefactio is an Expansion Tank (13 gal). It's a #90 bladder-type expansion tank designed for use in closed-loop hydronic and radiant heating systems. It is a direct replacement for Amtrol Extrol #90, B&G HFT-90 and Watts ETX-90 models.

Features:

• Full acceptance bladder;
• Compatible with conventional heating & radiant systems, glycol containing systems (up to 50/50 mix) and select solar applications;
• No contact with steel shell means no corrosion;
• Bladder design prevents waterlogging;
• Direct replacement for #90 in-line models from other manufacturers;
• For non-potable water applications only.
   

Technical Specifications:

• Factory pre-charge pressure: 12 psi;
• System connection: 1/2" male threaded;
• Max. operating temperature: 240°F;
• Max. operating pressure: 115 psi;
• Expansion tank volume: 13.0 gallons;
• Height: 23";
• Diameter: 14.9";
• Weight: 23 lbs.
   

Warranty:

• 5-year manufacturer's warranty.