The most common method to access small hermetic systems without ports is indeed the use of a piercing valve. This device allows for the temporary entry into a sealed system for repairs or testing. Therefore, the statement is true. ;
The statement is True, as piercing valves are widely used to access hermetic systems without ports. These valves allow for temporary access while minimizing the risk of leaks. They are a crucial tool in maintaining systems like refrigeration and air conditioning.
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