The SF1K 1..8 is a liquid flow switch designed for monitoring flow in pipes ranging from 1 to 8 inches in diameter. It is commonly used in HVAC, refrigeration, heat pumps, and fire suppression systems.

Specifications & Description

• Product Type: Liquid Flow Switch
• Model: SF1K Series (1–8 inch pipe sizes)
• Pipe Compatibility: 1" to 8" (25.4 mm to 203.2 mm) diameter pipes
• Connection: 1" NPT pipe connection
• Enclosure Rating: IP65 (dust-tight and water-resistant)
• Electrical: SPDT (Single-Pole Double-Throw) microswitch
• Set Point: Manually adjustable depending on flow rate
• Material: Includes multiple paddles made of 316 stainless steel; paddle size selected based on pipe size and flow rate
• Operation Principle:
  • Liquid flow pushes against the paddle.
  • Paddle movement actuates the SPDT microswitch.
  • Switch signals flow/no-flow condition.