The rarity of Pressure Regulator is Mythical, and been equipped it takes a “Bundle” slot. At this moment the item is available for trade.
Pressure Regulator is a skin for Clockwerk. The skin was added to the game on May 17, 2017, it was created by DNADota.
Pressure Regulator is currently one of the most popular skins, but it is rarely seen in the game due to its high price.