Thermax 3315019 is part of an array of pressure switches and transducers made by Thermax. It is a rotary switch designed to control pressure levels in liquid and air systems. The switch can be adjusted to preset cut-off points, which will give a signal when the pressure drops below or rises above that specific level. It is a versatile piece of equipment which can be used in a variety of pressure applications. The switch is constructed from durable materials, including a brass body and anodized aluminum fittings, and provides excellent reliability in even the most demanding environments.