GF JRG 5195.025 Notice De Montage Et D'utilisation page 134

E
At regular intervals check whether the backflow preventer functions properly, e.g. with the
help of a check or drain valve. Replace the backflow preventer in case of malfunction.
62
Join the JRG fitting and the JRG bypass mixing
valve with the help of the supplied bolts and
washers paying special attention to the flow
direction.
Make sure that the O-rings remain
placed in the groove provided.
Tighten the bolts crosswise as it
is common practice with flanged
connections.
Check all connections for leaks when
commissioning the system.