Product Overview

F261 Series Fluid Flow Switches Product Bulletin 1
Refer to the QuickLIT website for the most up-to-date version of this document.
The F261 Series Flow Switches respond to fluid flow in
lines carrying water, ethylene glycol, or other
nonhazardous fluids. These models also work in
applications with swimming pool water and lubricating
oils.
F261 Series Standard Flow Switches use a variety of
paddle sizes to respond to fluid flow rates in
applications with pipe sizes greater than 1 inch trade
size.
Figure 1: F261KAH Flow Switch
Table 1: Features and Benefits
Features Benefits
Type 3R (NEMA) or Type 4 (NEMA)
Polycarbonate Enclosure
Provides dust protection in indoor applications. Suitable for Use in Other
Environmental Air Space (Plenums) in accordance with Section 300.22(C)
of the National Electrical Code.
Viton® Diaphragms Allow use in fluid lines carrying chlorinated water, treated water, or other
nonhazardous fluids.
Low-Flow Operation on Low-Flow Models Actuates switch with less than 1.0 GPM (3.8 L/min) flow for water
applications or 9.0 GPM (34.1 L/min) flow for steam applications.
Gold-Plated Contacts on Selected Models Reduce intermittent contact problems in low-voltage and low-current
circuits.
Maximum Fluid Pressure of 290 psig
(20 bar)
Permits use in a wide range of pressure flow conditions.
F261 Series Fluid Flow Switches
Product Bulletin
Code No. LIT-12011987
Issued March 9, 2015