General Purpose Liquid Flow Switch, Series FS250

McDonnell & Miller : Flow Switches :

McDonnell & Miller announces new General-Purpose, Liquid Flow Switches, the Series FS250 – FS251 (NEMA1 version), and FS254 (NEMA4 version). These flow switches incorporate key changes to address customer expressed needs of greater reliability and lower flow sensing capabilities in a general purpose flow switch.

Features and Benefits

  • Common switching mechanism for both the FS251 and FS254
  • Measured flow-rate sensing of 5.8 gpm in 1” pipe (2.2 fps) in horizontal pipe installations, which is 18% lower than measured flow of comparable general purpose flow switches from major competitors. (Refer to submittal MM-627 for flow rates.)
  • 1-inch NPTM brass pipe connection
  • 1”, 2”, 3” and 6” Stainless steel paddles standard
  • Section IV boiler ratings of 250º F and 160 psig
  • No lead construction
  • Housing materials:
  • – FS251 – stamped sheet steel base with glass reinforced
  • polycarbonate cover
  • – FS254 – Cast aluminum base and cover

Brochures

    Installation/Operation Manuals

    Parts Lists

      To build and operate an efficient water system, you need both the right products and experts who know the application. Here, you can access our trusted network of partners who have the experience you need to get the job done right.

      To find Representative in Canada select your Province:

      Find your local dealer
      Postal Code
      Distance
      Province

      Find International Representatives