User’s Manual
Rev1.0
Date:15/07/2015 User’s Manual
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2.4 Procedure of installation
2.4.1 Nut sleeve insertion (No flow in pipeline)
1) Drill a hole on the position where the meter will be installed, Ø 13mm
（
± 0.5 mm
）
2) Clean the burrs and sharps on where will be welded
3) Weld the MNPT 1/2” socket (Part No.1) on the open hole vertically. The socket and the open hole
should be concentric, and vertical to the center line of the pipe line
4) Connect the 1/2” ball valve (Part No.2) with FNPT threads on both ends to the socket. Seal the
thread connection with thread sealant. Please note the lever on the ball valve should be point to up
when the valve is open
5) Insert the flowmeter into the ball valve and the socket, connect the sleeve (Part No.3) on the meter
and the ball valve, seal the thread conection part with thread sealant. Tighten the nut (Part No.4) with
hand.
6) Calculate the insertion depth. The sensor should be in the middle of the pipe area, insertion
depth S=A/2+B+C. Please reference to the picture below
A: Inner diameter of the pipeline
B: Thickness of the pipe line
C: The distance between the top of the pipeline and the upper end of the nut when the nut is fixed
