Monday, January 16, 2017

Flexcon Hydronic Expansion Tanks Are A True Work Horse

Constructed of deep drawn welded steel domes, Flexcon Industries HTX expansion tanks feature butyl diaphragms engineered for longer life. Butyl rubber is the material of choice for American heating systems as it offers low permeability rates at higher temperatures. Our oversized diaphragm maximizes tank drawdown, and minimizes wear. This design virtually eliminates diaphragm stretch, which enhances longevity.


  • Tank: 16- gauge cold rolled steel 
  • Finish: Appliance-quality paint for corrosion resistance
  • Diaphragm Material: 100% butyl rubber
  • Connection: Welded steel 
  • Testing: High pressure, seam weld, helium, final precharge check 
  • Air valve: Brass valve with O-ring seal 
  • Warranty: Five year

For more information on Flexcon products, please visit our website: