Building Construction No. 2 Questions taken from Jones & Bartlett Fundamentals of Fire Fighter Skills (3rd Edition) Progress Indicator: Question 3 of 15 3.  Using Sentinel which of the following would not produce a successful high pressure leak test? Choices: Open Cylinder Valve is displaye Oxygen cylinder pressure below 2,600 psi “X” is displayed with 4 bleeps and red LEDs flashing. Both and None of the above