AX-40V-DD Amtrol Extrol 23 Gallon Deep Drawn Diaphram Type ASME Expansion Tank

• Fixed Butyl/EPDM Diaphragm-Industry's Thickest
• Factory Pre-Charge-12 PSIG
• Max. Operating Temperature-240 Degree F
• 1-Year Warranty
• For use in closed, non-potable hydronic heating and chilled water systems
• Designed to meet all ASME Code Section VIII, Division 1 standards
• Available with optional sight glass and seismic restraints
• Suitable in propylene glycol applications with mixtures up to 50%
• Deep drawn models are lighter, stronger and more compact than traditional head and shell construction

Install Instructions
Specification Sheet

Extrol ASME commercial expansion tanks are designed to control pressure in closed hydronic heating systems. Available in diaphragm, partial acceptance bladder and full acceptance bladder designs, these tanks range in size from 8 gallons (30 liters) to 3,963 gallons (15,000 liters). Offered with maximum working pressures up to 300 PSIG (21 bar), Extrol is effective at maintaining positive pressure in a wide variety of HVAC systems.