WIKA flow switch for wet sprinkler systems with adjustable time delay (0-70 seconds) to avoid false alarms during water surges. Tamper-proof cover, IP56/NEMA 4 ingress protection for indoor/outdoor use, two microswitch sets activating the control panel and local audible warning, two cable duct openings for easy terminal-block connections. Detects flow once the sprinkler has been triggered. UL Listed / FM Approved.

WIKA flow switch for industrial heat exchangers, designed to detect interrupted flow ("no flow") of water and other non-corrosive liquids in industrial coolers, heaters or pipelines. Switch point repeatability ±0.5%, high-quality bellows and microswitch rated for over 500,000 cycles, rigid stainless-steel paddles to withstand pressure surges and high temperatures, red enclosure. Applications: heating, cooling, air-conditioning and water treatment plants, pumps and dosing systems, and operational controls preventing system failure when water/liquid supply is absent.