Series “D” expansion tanks are ASME rated precharged diaphragm-type pressure vessels. The Series “D” tank is designed to absorb the expansion forces of heating/cooling system water while maintaining proper system pressurization under varying operating conditions. The heavy duty diaphragm separates system water from the tank air charge thereby eliminating waterlogging problems.
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 D
- ASME Section VIII, Division 1 design and constructed
- Economical fixed butyl diaphragm
- Sizes: 8 – 211 gallon
- Vertical and horizontal designs
- Factory pre-charge to 12 PSI, adjustable in the field
- Seismic restraints available
- California-code sight glass available
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