Wessels Compression Expansion Tanks
Compression tanks are designed to absorb expansion forces and control the pressure in heating/cooling systems. This tank is the oldest style design and works well when the air is controlled and kept in the tank, not in the system.
- Wessels NA Series (ASME) Compression Tank Submittal Sheet
- Wessels NA Series (ASME) Compression Tank Instruction Manual
- Wessels Stainless Steel NA Series Compression Tank Series Submittal Sheet
- Wessels NAG Series (ASME) Compression Tank Submittal Sheet
The compression tank has been used for many years and works very well in specific systems. Using a plain steel expansion tank makes the system an air control system. The air volume or air cushion above the water level in the tank must be controlled. The common face between this air cushion and the water in the tank allows the air to be absorbed by the water. If the air is not removed properly from the water and placed back into the air cushion, the compression tank will become waterlogged.
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