World Magnetics 171D8WC-S-DC Differential Pressure Switch

The World Magnetics 171D8WC-S-DC Differential Pressure Switch provides precise low-pressure differential monitoring and SPDT switching for HVAC and pneumatic systems within a 0.15–8.0 in H2O (0.37–20 mbar) range.

It features a zinc die-cast housing with an aluminum electrical box, a silicone PE cloth diaphragm, 1/8-27 NPT female pressure ports, and screw-terminal electrical connections, with a 0.75 A at 75 VDC switch rating in a snap-action configuration.

Designed for vertical surface mounting, it delivers up to 1,000,000 mechanical cycles, operates from -30°F to 160°F (-34°C to 71°C), and provides proof pressure up to 40 in H2O depending on configuration, with shock and vibration resistance and an optional chemical-resistant finish, weighing approximately 2.5 lb.

Common applications include HVAC airflow monitoring, filter status detection, clean rooms, industrial ventilation, dust collection, and process air handling where dependable differential pressure switching supports system performance, safety, and reliability, with MIL-S-901-D and MIL-STD-167-1 standards for vibration and shock resistance.