Industrial Pressure Switch

Shanghai Zhaohui Pressure Apparatus Co., Ltd. is one of the leading manufacturers and suppliers of industrial pressure switch in China, also supports customized service and 1 year warranty. Welcome to wholesale bulk durable industrial pressure switch in stock here from our factory.

The industrial pressure switch monitors fluid or gas pressure and provides a discrete electrical contact output when pressure crosses a preset threshold. This SPDT relay contact serves as input to PLC, motor starters, or safety interlocks. Applications include hydraulic systems, lubrication circuits, cooling lines, and pump protection, initiating actions like starting pumps, closing valves, or sounding alarms. Mechanical types use pistons or diaphragms to actuate micro switches, offering proven reliability. Electronic versions employ strain-gauge sensors with micro controller comparison, delivering higher accuracy, programmable hysteresis, digital displays, and time delays to prevent nuisance tripping. Adjustable ranges span from vacuum to 15,000 PSI. Wetted materials-brass or 316 stainless steel-must resist medium corrosive. Process connections are typically 1/4" NPT or BSP. Modern piston pressure switch feature IO-Link for predictive diagnostics. Routine functional testing ensures continued personnel and equipment protection, making the industrial pressure switch a cornerstone of industrial safety and automation.

Used in hydraulic and pneumatic systems, lubrication circuits, cooling water lines, pump protection schemes, compressors, and safety interlock systems. Common in manufacturing, oil/gas, mining, water/wastewater, and automotive industries. It triggers alarms, starts standby pumps, or safely shuts down equipment upon loss or excess of system pressure.

Available in mechanical (piston/diaphragm) and electronic (strain-gauge) versions. Adjustable set point ranges from vacuum to 15,000 PSI. Features SPDT relay contacts with programmable hysteresis in electronic models. Weatherproof enclosures available. Provides reliable binary signaling for alarms, interlocks, and pump control. Simple, robust, and field-proven for plant-floor environments.