Zilmet is the only manufacturer that offers a full line of stainless steel expansion tanks in North America.  Our tanks are suitable for both potable and heating systems and are used for a variety of uses to include: 

  • High corrosive areas 

  • Rain water collection 

  • Water hammer 

  • Marine application 

  • Food processing plants 

Our line of stainless steel tanks consists of two series of tanks: 

  • INOX-PRO Series 

  • ULTRA-INOX-PRO Series 

INOX-PRO: The expansion tanks in this line are entirely made of 304 stainless steel.  These tanks all have butyl diaphragms.  The sizes of the series range from .04 gallons up to 4.8 gallons.  The 2.1, 3.2 and 4.8 gallon tanks are all NSF 61 certified. 

ULTRA-INOX-PRO: The expansion tanks in this line are also entirely made of 304 stainless steel.  These tanks are manufactured with replaceable butyl bladders.  The tanks in this series range in size from 6.3 gallons to 26.4 gallons.  These tanks come in both vertical and horizontal models.