ST-447C through ST-457C Installation and Operation Instructions ST-35CL through ST-600CL Installation and Operation Instructions

Therm-X-Trol expansion tanks are designed to control pressure in commercial closed, potable hot water systems. Available in diaphragm, partial acceptance bladder and full acceptance bladder designs, these tanks range in size from 2 gallons (7.6 liters) to 528 gallons (2,000 liters). Offered with maximum working pressure up to 300 PSIG (21 bar), Therm-X-Trol is effective at protecting the water heater and other plumbing fixtures while saving energy and money. Available in ASME and Non-ASME models.

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