The 836-C64S electromechanical pressure control device is a product of Allen-Bradley/Rockwell Automation and it belongs to the Bulletin 836 product line. It is a Style C pressure controller with external bellows and it has a pressure specification of 64. This pressure control switch has an adjustable differential pressure range of 4 to 45 PSI and an adjustable operating pressure range of 6 to 250 PSI. These ranges are independently adjustable and the differential pressure is set at the minimum rating by default while the operating pressure is set at the maximum rating by default. This pressure control unit supports the Type 4X non-metallic enclosure. It does not support factory modifications such as a standard contact block, and single-pole and double-throw snap action contacts. It does have stainless steel bellows that are resistant to corrosion, however.

The 836 Pressure Controls series 836-C64S electromechanical pressure control switch by Allen-Bradley is engineered for general industrial use in industrial pneumatic and hydraulic pressure systems and their applications. It is made for several typical applications including the monitoring of high and low pressure, low pressure alert, vacuum transfer systems, and high pressure alert applications. The 836-C64S electromechanical pressure control switch is also used in applications like air compressors, liquid level control, and compressed air monitor system applications. The repeat accuracy of this Bulletin 836 pressure controller is +/- 0.5 percent, and it has a maximum surge pressure rating and line pressure rating of up to 450 PSI each. The 836-C64S electromechanical pressure control switch can work with all non-corrosive fluids and gases and with some fluids and gases that are corrosive.