... 'S REQUIREMENT3) Dip tube thread for 230 series valve: M10x1 or M10x0.754) When filling ratio at 0.67, PT=250bar in the ... fire extinguisher, the busrting disc pressure value for 230 series valve 190±15bar ... , 200±15bar, 220±15bar and 235±15bar are available for use.5) When filling ratio at 0 ...