Norgren excelon bl74 425g combination filter regulator lubricator g1 2 port norgren bl74 425g a pre assembled combination maintenance unit from the b excelon b range of pneumatic equipment consists of a filter regulator and oiler as well as a pressure gauge the unit is capable of in line or modular installation with other products from the b excelon b range the micro fog lubricator is suitable for most general purpose pneumatic applications and the flow sensor provides a nearly con