Econ 7755 User manual

Installation & Operation Manual
Proven Quality since 1892
ECON ball valves Fig. 7755 www.eriks.com
Rev.0
Content
1. ERIKS operating companies
2. Product description
3. Requirements for maintenance staff
4. Transport and storage
5. Function
6. Application
7. Installation
8. Maintenance
9. Service and repair
10. Troubleshooting
11. Disposal
1. ERIKS operating companies
ECON ball valves are being delivered by several ERIKS operating companies on a worldwide
basis. In this manual these will be referred to as ‘ERIKS’, the individual terms of delivery of the
ERIKS operating company having executed the order are applicable.
2. Product description
The ECON ball valves are designed according the information published in our latest catalogue or
on our website www.eriks.com and should be used in accordance with the applicable pressure-
temperature rating as stated in the catalogue or on this website. Ball valves are provided with
marking, according to EN 19. The marking makes the identification of the valve easier and
contains:
- size (inch)
- pressure rating class
- body material marking
- ECON logo
3. Requirements for maintenance staff
The staff assigned to assembly, operating and maintenance tasks should be qualified to carry out
such jobs and in any circumstance, ensure personal safety
4. Transport and storage
During transport and storage the valves should be in open position and protected against external
forces and influences. The valves should be stored in an unpolluted space and should also be
protected against all atmospheric circumstances. There should be taken care of the temperature
and humidity in the room, in order to prevent condensate formation.
5. Function
ECON ball valves are designed to stop the flow of a medium. The valve is closed by turning the
lever clockwise; don’t use tools to increase the torque on the lever.

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.

Installation & Operation Manual
Proven Quality since 1892
ECON ball valves Fig. 7755 www.eriks.com
Rev.0
Long life and maintenance-free of valves can be maintained under normal working conditions and
in accordance with pressure/temperature and corrosion data chart.
9. Service and repair
All service and repair jobs should be carried out by authorized staff, using suitable tools. Original
spare parts must be used.
- welding repair and drilling on the valve is forbidden.
- it’s not possible to replace the seat rings or stem sealing, because of the design of the ball
valves.
- after installation it is necessary to check the ball valve operation and tightness of all
connections. Leakage test should be carried out.
- in use, the valve should be checked and maintained periodically at least every 3 months,
depending on the medium.
10. Troubleshooting
It is essential that the safety regulations are observed when identifying the fault.
Problem
Possible cause
Corrective measures
No flow
The ball valve is closed
Open the ball valve
Dust caps were not removed
Remove dust caps
Little flow
Valve not completely open
Open valve completely
Piping system clogged
Check piping system
Valve difficult to operate
Stuffing box seal too tight
Loosen nut
Wrong direction of rotation
Turn counter clockwise to open
Seats damaged by foreign
particles.
Replace the ball valve
Expanded medium behind the
ball
Cool down the ball valve
Leakage along the stem
Stuffing box gland not tight
enough
Tighten stuffing box gland, if
necessary replace the ball valve
Leakage along valve seat
Valve not properly closed
Pull lever tight without tools
Seat damaged by foreign
particles
Replace the ball valve
Medium contaminated
Clean valve and install strainer
11. Disposal
Dismantled and rejected valves cannot be disposed with household waste. The valves are made
of materials which can be re-used and should be delivered to designated recycling centers.
Remark:
General note for products which may be used for seawater:
Although our products can be used in seawater systems it should always be noted that, in case of
installation in a piping system made of materials which are frequently used because of their excellent
seawater resistance (e.g. Cunifer), large potential differences may occur possibly causing corrosion
which could permanently damage the proper functioning and integrity of our product.
A combination of different materials should always be mentioned prior to the purchase of our products
in order for us to give the best possible advise on a safe functioning.