Welding of larger valves ≥ DN 200 full port / DN 250 reduced port.
The valve must remain open during welding to protect the ball.
At risk of overheating there should a pause in the welding process.
The ground connection must not be connected to the valve.
Flange mounting: The valve should only be mounted by qualied personnel and
follow valid norms and standards. The valve should be in open position during
mounting in order to ensure, that dirt and coatings do not ruin the surface of
the seals. The mating surface of the ange on the pipe should be parallel to the
mating surface of the valve. The centerline of the valve and the pipeline should
also be correctly aligned. The length of the valve should be the same as the length
between the anges in the pipeline also taking account the thickness of the gaskets.
The anges of the pipeline should be compatible with the anges on the valve. For
detailed information, please see standard EN 1092-1.
6. Commissioning and operation
After installation of the valve the pipe line should be ushed thoroughly. During this
process the valve is to be open.
Testpressure at commissioning
If a pressure test of the system is needed, the following procautions are to be
considered:
• The building of pressure is to be done slowly and gradually in order to prevent
pressure surge and hammering.
• During the pressure test of the pipeline (1,5 x PN) the valve is to be in the open
position.
• BROEN Ballomax® ball valves are designed to be fully open or fully closed.
Control that the valve is either fully open or fully closed position against the
endstop.
• Take care that the maximum and minimum temperatures, of the valve, is not
exceeded! The maximum operating pressure and minimum-/maximum-
temperatures are shown on the label of the valve. Graphs with allowable
pressures in given temperatures can be found in the technical catalog.
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