PITTSBURGH, March 4, 2025 /PRNewswire/ -- "I wanted to create a remote-controlled valve assembly that could be configured between a nitrogen tank and an ... accessory for HVAC technicians ...

PITTSBURGH, March 4, 2025 /PRNewswire/ -- "I wanted to create a remote-controlled valve assembly that could be configured between a nitrogen tank and an air conditioning system," said an inventor, ...