... size:2",2.5",3",3.5",4",4.5",and 6"pressure range:-6...0 mbar up to 0...400 ... fixing,falaned fixing thread,hose etc.connection thread:NPT,BSP,BSPT,PT,ZG,and other special specification availabletube/capsule material: 316 ss or ... copper alloycase: 304 ssbezel: 304 sswindow(lens):polycarbonate,and safety ...