Air separators are used to continuously remove the air contained
in the hydronic circuits of heating and cooling systems. The air
discharge capacity of these devices is very high. They are capable of
removing automatically all the air present in the system down to the
The circulation of fully de-aerated water enables the equipment to
operate under optimum conditions, free from noise, corrosion, localized
or mechanical damage. Micro-bubbles, fusing with each other, increase
in volume (get larger) until they become large enough to rise to the top
where they are automatically released.
Air separator with automatic 1/2" check valve (code 561402A) to mount expansion tank on bottom thread.
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Q:What is the benefit or difference between this model 551006A and the 551006AC. I don't know which one to buy.
A:The 551006AC has a service check valve on the bottom port connection, so the expansion tank can be replaced without having to purge the system.