On what basis would you select a compression tank?

Selecting a compression tank primarily hinges on the volume of water in the system. This choice is essential because a compression tank must adequately accommodate the amount of water in the heating or cooling system to maintain optimal pressure and prevent water hammer or system failure. If the tank's volume is insufficient, it won't be able to absorb the expansion of water as it heats up, which can lead to excessive pressure build-up and potential damage to the system. Therefore, assessing the volume of water, in conjunction with the specific design and operational requirements of the system, is critical for choosing an adequately sized compression tank.

While material quality, pressure rating, and manufacturer's recommendations are indeed important factors in the overall selection and performance of a compression tank, they primarily ensure durability, safety, and compliance with fitting standards rather than determining the fundamental capacity needed for the system's specific demands.