HVAC Tanks

Pre-charged Bladder & Diaphragm Expansion Tanks ASME (B,D)

Pre-charged Expansion Tanks contain either a bladder or a diaphragm to separate the air charge from the system water. Tanks are design to absorb the expansion forces of heating/cooling system water while maintaining proper system pressurization under varying operating conditions.

Series B

  • Designed and constructed according to ASME Section VIII, Division 1
  • Heavy duty full acceptance replaceable butyl bladder
  • Sizes: 10 – 3,963 gallons
  • Factory pre-charge to 12 PSI, adjustable in the field
  • High pressure models up to 250 PSI available
  • Seismic restraints available
  • California-code sight glass available
  • Integrated bladder integrity monitor included on all tanks

Series D

  • Designed and constructed according to ASME Section VIII, Division 1
  • Economical fixed butyl diaphragm
  • Sizes: 8 – 211 gallons
  • Suitable for both vertical and horizontal installations
  • Factory pre-charge to 12 PSI, adjustable in the field
  • Seismic restraints available
  • California-code sight glass available
  • Integrated diaphragm integrity monitor included on all tanks
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Air Control

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