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Specifications subject without notice
Edition: August 2017
Operating instructions BA 14b-02_EN
Note
The mating flanges must have smooth facings.
Contact the manufacturer if you intend to use other flange forms.
Danger
The actuating device is set for the operating data specified in the order.
Do not alter the settings for the final positions OPEN and CLOSED without the manufacturer’s prior consent.
Warning
In exceptional cases, when a valve is installed into a pipeline without an actuator mounted, make sure that pressure
is not applied to these valves.
If an actuator unit has been mounted subsequently, torque, direction of rotation, operating angle as well as the final
positions OPEN and CLOSED must be adapted to the butterfly valve.
Failure to follow these safety precautions may result in personal injury and can damage equipment
installed in the pipeline.
The following warnings are to be observed for Gears:
Warning
Gears are not designed to be used as step-ladders:
Do not apply any weight/load to the gears. This can damage or destroy the butterfly valve.
Warning
Gears that weigh more than the butterfly valve:
Support any gears which due to its size and/or mounting situation would otherwise cause the valve to bend under
the load.
The following warnings are to be observed for high-performance butterfly valves including a seat with metal sealing:
Caution
To avoid that the seat seal is damaged, make sure the pipeline upstream and downstream of the place of
installation is carefully cleaned from all hard and abrasive foreign material prior to installation of the butterfly valve.
4.2
Installation instructions
Store and transport the valve with its protective packing right up to the point of installation.
Check valve (and gear) for signs of damage that may have occurred during transportation. Do not install a damaged
butterfly valve.
Prior to installation, carry out a function check. The valve must open and close properly. Any function errors that are
recognized must be remedied before commissioning. See also section 7 <Troubleshooting>.
Make sure that only butterfly valves are installed when their pressure rating, end connections, (flow rate) and face to face
dimensions match the conditions of application. See the designation of the butterfly valve.
Danger
Do not install a butterfly valve if its permissible pressure/temperature ranges do not apply to the operating
conditions. The limits of application are marked on the valve, see section 2.4 <Designation>. The permissible range
is determined in section 1 <Intended use>.
Failure to follow these safety precautions may result in personal injury and can damage equipment
installed in the pipeline.
Make sure the end connections of the pipeline are aligned with the butterfly valve’s end connections and their ends have
parallel planes.
Prior to installation, carefully clean the valve and the connecting section of the pipeline from dirt, especially hard foreign
material.
Make sure, in particular, that flange facings (and any flange gaskets) are free from any dirt prior to installation.
The preferable mounting position for butterfly valves is with the shaft in a horizontal position. However, if possible, the gear
should not be located directly underneath the butterfly valve.
