Item #
IFW, Diaphragm Flow Switch for Non-Corrosive Liquids, 1-50 Lpm

IFW is a mechanical switch for the detection and confirmation of liquid flow. The flow body houses a diaphragm responsive to flow rate. A connected rod and lever mechanism triggers a micro switch at a manually adjustable set point. An optiional light, either neon (VAC) or LED (VDC), can indicate operation. Compatible liquids must be non-corrosive to the brass and copper alloy wetted parts and NBR or optional FKM diaphram. Wiring method can be normally open or closed with a range of voltages. A terminal box and CE compliance are also optional.

  • Flow ranges (lpm): 1-10, 10-20, 20-50
  • Port sizes (Rc, NPT, G): 3/8, 1/2, 3/4
  • Temperature rating (C): -5 to 60
  • Operating pressure (MPa): 0.1 to 0.6
  • Withstand voltage: 1500 VAC (one minute)

Important Documents

More Information
Manufacturer SMC
Manufacturer Part # IFW550-04-66-Q
Port Size 1/2
Thread Type PT
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