Installation & Operation Manual
Proven Quality since 1892
ECON ball valves Fig. 7755 www.eriks.com
Rev.0
6. Application
These ECON ball valves are only suitable for compressed air and starting air (of engines)
applications up to a differential pressure of 30 bar. In the closed position the air on the
downstream side of the valve will automatically be vented to the environment by the hole in the
bottom side of the valve. This feature makes the valve monodirectional!
For the use in other application as mentioned above, please contact ERIKS to verify whether the
valve is suitable. The installation designer is responsible for the valve selection, suitable for the
working conditions. The valves are unsuitable, without written permission of an ERIKS company,
to apply for hazardous media as referred into Regulation (EC) No 1272/2008.
7. Installation
During the installation of the ball valves, following rules have to be considered:
- check before assembly if the ball valves are not damaged during transport or storage.
- check if the applied ball valves are suitable for working conditions, medium, the system
connections and according to pressure and temperature limits.
- remove the protective plastic cap on the threaded ends when applicable.
- the valve is monodirectional and therefore the valve body is marked with a flow direction.
This direction must be followed during installation.
- the internals of the ball valve and pipeline must be free from foreign particles.
- the valve must be fitted in the pipeline with the ball in open position, check if the threaded
ends of the pipe and the valve are according the same standard. Clamp the valve only on
the hexagon ports during the installation.
- the valve must be fitted in the pipeline with the ball in open position.
- the venthole in the bottom side of the valve must be pointing towards a safe direction,
away from the operator and attendees in order to prevent injuries.
- to avoid leakage, use professional sealant (e.g. PTFE tape) on the threads.
- install the pipeline in such a way that thrust forces, bending forces, tension forces and
intensive vibrations will be avoided.
- before start-up of the installation, certainly after repairs, the pipeline must be flushed, of
course with open valve.
- during use, don not partially open the ball valve (regulation function): the pressure drop
and/or flow of the medium can bring damage to the seat rings and/or ball.
- when in use do not open or close the ball valve too fast: this can cause water hammer.
- for any further information please contact the ERIKS company that has supplied the
valves. Contact information can be found on www.eriks.com
8. Maintenance
Before starting any service jobs, make sure that the medium supply to the pipeline is cut off,
pressure was decreased to ambient pressure, the pipeline is completely cleaned and ventilated
and the plant is cooled down. Always keep safety instructions into account and take all personal
safety precautions.
During maintenance, the following rules should be observed:
- keep always personal safety precautions into account and always use appropriate
protection e.g. clothing, masks, gloves etc.
- be alert that the temperature still can be very high or low and can cause burns.
- be alert that the ball valve can trap pressurized fluids in the ball cavity, when in closed
position.
- check the valve on all possible leaking possibilities.
- dust, grease and medium residual, must be frequently cleaned of the valve body and all
moving parts, such as stem to maintain all operating functions.
- the valve must be checked regularly to ensure safe operation. An interval of three months
is to be advised.
