... ,air compressor, vacuum pump, pressure air regulating, testing equipment, medical sterilizer,etcSpecial features: 1.Safety and reliable 2.Nominal size 40,50,63 ... 1/2 B (male), 22 mm flats Pressure element:Cu-alloy, ≤ 60 bar: C-type > 60 bar: Helical typeMovement:Cu-alloyDial:Aluminium, white, with ...