The 836T-T251J is a pressure control module. It is offered by Allen-Bradley as part of the Bulletin 836T Pressure Control series. This control circuit device is compatible for use in hydraulic and pneumatic industrial user applications. This module features bellows made from copper alloy that can be used in a variety of pressure media including air, water, hydraulic fluids, non-corrosive liquids, and non-corrosive gases. It is available in Type 1, Type 4, and Type 3 enclosures that are suitable for use in industrial environments. This control module has a standard pressure connection with a National Pipe Taper Fuel (NPTF) female pipe thread specified with a 1/4-inch diameter. The module features a contact block with two (2) single pole double throw circuits. It has an operating range between thirty (30) inches of Mercury and thirty-five (35) inches of Mercury per square inch. The adjustable differential pressure lies in the range of two (2) to seven (7) psi using approximate midrange values. This control module features a repeat accuracy of one percent of the maximum range. The maximum line pressure for this unit is eighty (80) psi and the control module can withstand maximum occasional surge pressures of up to ninety (90) psi. This unit is designed to operate in a temperature range of negative twenty-two (-22) degrees Fahrenheit to positive one hundred and fifty (+150) degrees Fahrenheit, or the equivalent range of negative thirty (-30) degrees Celsius to positive sixty-six (+66) degrees Celsius. The specified storage temperature range is from negative twenty-two (-22) degrees Fahrenheit to positive two hundred (+200) degrees Fahrenheit (–30 degrees Celsius to +93 degrees Celsius).