How to remove water completely after applying pressure to the air cooler’s water system
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Due to the special structure of the air cooler, how can the remaining water be completely removed after applying water pressure?
What medium does the OP use? With such strict requirements for water residue, why not use a hydrostatic test from the start?
No need to use it now; store it in the warehouse after pressurizing the water to prevent rust
Generally, it is purged first and then sealed with nitrogen. If you’re worried that the water won’t drain completely, you can start by using air pressure instead.
Using only compressed air for purging is far too inefficient