HLW ASME code, Section IV applies to commercial- and industrial-sized hot water storage tanks.
The minimum nominal water capacity in these industrial and commercial hot water tanks is 120 gallons (450 Liters).
The maximum temperature is 210℉ (99℃) and maximum pressure is 160 psig (1100 kPa) for these potable hot water tanks.
Commercial Hot Water Tanks’ Usage
Vessels built under the HLW ASME code may be used for storage of potable water in several different industries where a large quantity is required.
The following businesses could benefit from our hot water storage tanks: food processing, dairies, pharmaceutical, chemical processing, hospitality, commercial laundries, hospitals, multi-dwelling apartment buildings, and many other industries.
Potable Hot Water Tanks’ Sizes
Hanson vertical standard sizes for potable hot water tanks are from 140 to 2150 gallons.
The horizontal standard sizes for hot water storage tanks range from 180 to 3500 gallons, with an outside diameter ranging from 30 to 72 inches.
The tanks are supported by angle legs or solar feet.
The standard lined potable hot water tanks are built with an 11 x 15-inch handhole in order to access the inside of the tanks for the lining.
This handhole is not required by the HLW ASME code. The minimum manway size is 12 x 16 inches.
The smaller the tank surface, the heat loss is less, therefore the larger tank diameter is better.
Lining in Hot Water Storage Tanks
Hanson tanks are lined with glass, cement, or epoxy.
Hanson Tanks for drinking water system components are NSF Certified.
A galvanized option is also available for commercial hot water tanks.
The protection the lining offers is necessary on the steel surface because of a dissolved oxygen in the water works to corrode the tank and connections that can lead to leakage.