Canpipe Limited


Thermal Expansion Tanks

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The FLEX 2 PRO PH potable water expansion tanks are designed to maintain safe pressure in domestic water systems that utilize a back flow preventer or check valve.

These tanks feature a 100% butyl diaphragm and plastic liner to separate the system water from the tanks air pre-charge. The system has a stainless steel sleeve to prevent corrosion and the tanks are finished with appliance-quality paint to help prevent external corrosion.

  • Tank is 16-gauge cold rolled steel
  • Appliance quality urethane paint finish for indoor or outdoor installation
  • Water chamber is 100% butyl rubber, lined with polypropylene
  • Stainless steel connection
  • Steel clench ring regulates movement and prevents diaphragm from rubbing against tank wall
  • Air valve is brass valve with o-ring seal
  • 5 year limited warranty