Product details:

F61 Series Standard Flow Switch. Enclosure: NEMA 1. Bellows: Phosphor Bronze. Paddle: Stainless Steel; three-piece Paddle (3 in., 2 in., and 1 in. Segments) Installed, 6 in. Paddle Supplied Uninstalled. . Standard Flow Switches - Use F61 Series Standard Flow Switches in applications with fluid pressures up to 150 psig (1034 kPa). A typical application for a standard F61 flow switch is to shut down the refrigeration compressor on a fluid chiller system if flow stops, reducing chances of chiller freeze-ups. NEMA 1 Enclosures - Use models with NEMA 1 enclosures for indoor applications where they are protected from weather and splashing water. Use these models with pipes carrying fluids at temperatures in the range of 32 to 250F (0 to 121C) where fluid temperatures are above ambient dew point. NEMA 3/NEMA 3R Enclosures - Use models with NEMA 3/NEMA 3R (rain-tight) enclosures for indoor or outdoor applications in high-humidity environments. Use these models in applications with pipes carrying fluids at temperatures below dew point temperature or below 32F (0C) but above -20F (-29C). Do not use these models in applications or environments where the temperature may cause the fluid to freeze. Gold Contacts - Models with gold-plated contacts provide improved electrical performance in low-voltage, low-current circuits. Use these models for low-energy loads to operate small relays, solenoid valves, and electronic control circuits. Operation - The flow switch responds to pressure exerted on the fluid paddle by the flowing fluid. A range adjustment screw adjusts the rate of flow required to actuate the switch. Johnson Controls. Johnson Controls.