Direct Operated Tank Padding Regulator or Gas Pressure Reducing Regulator for Low Pressures 3/4" - 1" (DN20 - DN25); Balanced Plug - Good for High Inlet Pressures The Mark 608BP balanced plug gas pressure regulator is the ideal valve for low pressure gas regulation with higher inlet pressures. The self-contained low pressure gas regulator is for use on tank blanketing, gas meter inlet pressure regulating and other low pressure air and gas applications. The valve can be installed in any position and can be easily repositioned in-line.