... gas leak detector manipulator/gas alarm manipulator which work with gas detector, it's stable and easy to use Manipulator/gas leak detector manipulator/gas alarm manipulator which work gas detector ... life: 5 yearsValve specifications: 4 fen (1fen=1/3 centimeter), 6fen, 1 inch, 1.25 inch, ... 1.5 inchAutomatic valve-closing time: 3~10 seconds Technical:1. Operating conditionTemperature: -25~+85 ...