Xylem MM 619F Series FS6 Flow Switch - Manual (Page 4)

4
STEP 2 - Connecting the Flow Switch to Pipe
b. Insert pipe threads into flow switch and turn 2
or 3 times until tight.
• Place one pipe wrench on hex fitting of flow
switch and one wrench on connecting piping.
Tighten to following torque values.
- 47 ft•lb (64 N•m) for 3/4” pipe
- 63 ft•lb (85 N•m) for 1” pipe
• Repeat to connect pipe to opposite side of
flow switch.
a. Apply pipe sealing compound or PTFE tape to the
pipe threads.
NOTE: Do not apply sealant to first threads as this
switch is grounded (earthed) via the pipe mounting.
PTFE