F61 Series

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Product Bar End

F61 Series

Flow Switch F61 Series

Flow Switch


The F61 Series paddle flow switches are used to prove flow on liquid lines using water, ethylene glycol solutions, or other liquids compatible with brass and phosphor bronze parts. The SPDT contact switch is activated by liquid flow through the pipe and the set point is adjustable. The F61KD (NEMA 1 enclosure) and F61MD (NEMA 3R enclosure) are inline models for 1/2" NPT and 3/4" NPT pipe. The F61KB-11 (NEMA 1 enclosure) and F61MB-1 (NEMA 3R enclosure) are for 1" (2.5 cm) and larger pipes. They are furnished with a stainless steel paddle in three segments for pipes 1" to 3" (2.5 to 7.6 cm) in diameter. Paddle segments may be removed or trimmed as needed. A 6" (15 cm) paddle is also furnished for 4" (10 cm) diameter pipes and larger.


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Media Temperature Range:

 :KB-11, KD-3, KD-4 32℉ to 250℉ (0℃ to 121℃)

 :MB-1, MD-1, MD-2 -20℉ to 250℉ (-30℃ to 121℃)

Maximum System Pressure:

 : 150 psig (1034 kPa)

Materials Of Construction:

 :KB-11, MB-1, KD-3, KD-4 Brass fittings, phosper bronze bellows, stainless steel paddle

 :MD-1, MD-2 Brass fittings, stainless steel bellows, stainless steel paddle

Approvals: UL recognized File E5368

Warranty: 1 year