• Excelon design allows in-line installation or modular installation with other Excelon products • Quick release bayonet bowl • Optional service life indicator turns from green to red when the filter element needs to be replaced F73G & F74G Series: Body: Aluminium Guarded Transparent Bowl: Polycarbonate with steel guard Metal Bowl: Aluminium F72G Series: Body: Zinc Metal Bowl: Zinc Medium: Compressed Air Only Transparent Bowl: Polycarbonate Liquid Level Indicator Lens (Metal Bowl): Transparent Nylon Element: Sintered Polypropylene Elastomers: Neoprene & Nitrile Optional Service Life Indicator: Transparent nylon body, acetal internal parts, stainless steel spring, nitrile elastomers