Additional InformationASHRAE 188|ASME Section VIII, Division 1|IAPMO Listed|JIS Z2801|NSF Certified
Marketing InformationEXTROL® ASME commercial expansion tanks are designed to control pressure in closed hydronic heating and cooling systems. Available in diaphragm, partial acceptance bladder and full acceptance bladder designs, these tanks range in size from 6.4 gal (24 L) to 3963 gal (15000 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.