Features: This flow switch is an automatic device that controls flow in pipes, suitable for water treatment systems, central air-conditioning, water-cooled chillers, and related industries. Compatible fluids include water, ethylene glycol, oil, or other non-hazardous and non-corrosive liquids. The flow control setting is adjustable, and the repeat action point is stable. Protection rating is IP54; the switch contact life is up to 100,000 cycles. When the flow rate exceeds the set value, the fluid drives the paddle and activates the micro switch, allowing the SPDT contact to connect one circuit and disconnect another. Do not use in applications where fluid temperature drops below freezing. Specifications: Output Form: Micro switch SPDT output Micro Switch Rating: 15A max, 250VAC/DC Models: HFS-15, HFS-20, HFS-25 Thread Size: R1/2, R3/4, R1 Fluid: Water, oil Fluid Temperature Range: 1°C to 100°C Maximum Pressure: 10 bar IP Rating: IP54 Package Includes: 1 x Flow Switch, 1 x Set of Paddles