User Guide

The flow rate is adjusted by carrying out
the following operations:
A. With the aid of the indicator (1),
mark the reference flow rate on
which the valve is to be set.
Flow rate
adjustment
1
B. Use the ring (2) to slowly open the
flow meter bypass valve that shuts
off the flow of medium in the flow
meter (3) under normal operating
conditions.
3
2
C. Keeping the flow meter by-pass
valve open, apply a wrench (9 mm
for 1/2” to 1 1/4” sizes; 12 mm for
1 1/2” and 2” sizes) to the balancing
valve control stem (4) to slowly
adjust the flow rate, which is
indicated by a metal ball (5) that
runs inside a transparent cylinder
(6) alongside which there is a
graduated scale in GPM.
4
5
6