Flomec 490, Инструкция по эксплуатации, Страница: 7 / 20

Installation 6
CAUTION : Hot tap installation
should only be performed by
qualified personal. Installation
procedures should be in accordance
with the safety rules, regulations and
requirements applying to the territory
in which the Insertion Meter is being
installed.
If necessary extend valve
port using a 2” nipple &
socket combination to
ensure the paddle is clear
of the ball valve.
2.5 Hot tap installation
( model DP525 )
IMPORTANT
Before removing the
DP525 from the
installation first
withdraw the
Meter body to
the maximum
distance allowed by
the three height
adjusting threaded
rods. This will enable
the isolating valve
to be fully closed
without damaging the
paddle.
FLOW
2" Nipple
2" Weld-O-let
( threadolet )
2" ball or gate
isolation valve.
(Allow min. 40mm I.D. to
clear metering head)
Clean & lubricate screw
threads before
withdrawing the Meter
body in order to avoid
nut seizure
Hot tap clearance hole in
pipe wall to be a minimum
of 40mm diameter (1.6").