Flow Meters & Controllers features: Hfs-20/15/25 r3/4 liquid water oil sensor control automatic paddle flow switch 15a 250v ip54(25) Color: we send based on the color or size of the main image of the product page. Quantity：we send based on quantity on title, if there is no quantity in the title, we send based on description. Size:25 Features: This flow switch is an automatic element that controls flow in pipes, which can be used on water treatment system, central air-conditioning, water cooled chiller and relative industries. Applicable fluid includes water, ethylene glycol,oil or other liquid not classified as hazardous or corrosive. Flow control value is adjustable, repeat action point is stable. Protection grade is IP54; the contactor life is up to 100,000 times. When flow rate exceeds set value, fluid drives blade and micro switch, the SPDT link can connect a circuit and disconnect other circuit. It can not be used when fluid temperature drops below freezing point. Specifications: Output Form: Micro switch SPDT output Micro Switch: 15A(max.), 250VAC/DC Modelï¼ HFS-15/ HFS-20/ HFS-25 Thread:R1/2 R3/4 R1 Fluid: Water, oil Fluid Temperature: 1â~100â Max. Pressure: 10bar IP Grade: IP54 Package Includes: 1x Flow Switch & 1 x set Paddles