Mounting - PENN Controls - F261KEH - F261KFH - F261MEH - F261MFH - Flow, Liquid Level, and Air‐Volume Control - F261 Fluid Flow Switch

F261 Series Flow Switches Installation Guide

Brand
PENN Controls
Product name
F261 Fluid Flow Switch
Document type
Installation Guide
Part number
24-7664-2969
Document revision
F
Revision date
2020-11-19
Language
English
Figure 1. Wrench usage

Important:
  • Use only the wrench flats provided.
  • To avoid damaging the switch, do not tighten the switch to the tee by grasping the switch enclosure.

To mount the F261 Series Flow Switches, observe the following guidelines:

  • Install the switch so that the enclosure and interior are accessible.
  • Mount the switch so that the flow of the fluid is in the direction of the arrow on the enclosure.
  • Use a pipe union on each side of the flow switch to allow for easy removal or replacement.
  • Do not allow the pipe to extend too far into the flow switch casing.
  • Use pipe thread sealer or Teflon® tape on the male threads only.
  • Do not remove the case-to-cover O-ring on Type 4/IP67 enclosures.
Figure 2. Trimming diagram for the large flow paddle

For standard 1 in. x 1 in. pipe installation, mount the F261 flow switch in a standard 1 in. x 1 in. x 1 in. tee. For larger sizes of pipe, use a reducing tee to keep the flow switch close to the pipe and provide adequate paddle length in the flow stream.

Example: Use a 2 in. x 2 in. x 1 in. tee for a 2 in. pipe. If you use a standard 2 in. x 2 in. x 2 in. tee, install a face or hex bushing in the top opening to reduce the top opening to 1 in.