Fig. 5.
Fig. 7.
Fig. 6.
5. Installation and welding
Welding
The pipe line is to be cleaned thoroughly before the installation of the valves, as any
impurities can damage the surface of the valve and seals.
Do not remove the manual gear or actuator from the valve unless it is absolutely
necessary. In the event the manual gear or actuator is to be removed during or after
the installation, then contact BROEN customer service or see instructions in the
chapter “Instruction for mounted gear”.
Electric welding (TIG, MIG) is recommended for all BROEN Ballomax® ball valves in
steel. Valves larger than DN150 should always be welded in the pipe line by means
of electric welding.
Do not overheat the valve during the welding – there is a risk for damage of the
seals. It is recommended, that the welding is done by qualied personnel.
Cool the valve (after welding) before normal use. The valve should only be operated,
when the valve is cooled suciently.
The welding is only to be done on the ends of the valve and not on the body of the
valve, as this will damage the seals in the valve.
For further information refer to the guidance on the valve.
The valve can be placed in both vertical and horizontal position, and during the
entire welding process it should be noticed, that the valve must be in open position.
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