Econ 7343, 7383 Installation & Operation Manual

Installation & Operation Manual

Proven Quality since 1892

ECON ball valves Fig. 7343, 7383 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. Removal

1. ERIKS operating companies

ECON wafer type 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 wafer type ball valves are designed according to EN 1983 and should be used in
accordance with EN 1092 pressure-temperature rating and the information in our latest catalogue
or on our website www.eriks.com Ball valves are marked according to EN 19. The marking makes
the identification of the valve easier and contains:

- size (DN in mm or inch)

- pressure class

- body and bonnet material marking

- ECON logo

- heat numbers

- tag plate

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

Transport and storage should always be carried out with the ball complete closed and the valves
should be protected against external forces, influence and destruction of the painting layer as well.
The purpose of the painting layer is to protect the valve against rust, during transport and storage.
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; please don’t use tools to increase the torque on the lever. It is recommended to
use the ball valve in a complete open or closed position. An intermediate position must be avoided
as much as possible, to protect the seats.

6. Application

The ECON ball valves are used in industrial applications with clean gasses and liquids. The valves
are designed for standard operating conditions. For the use in extreme conditions e.g. highly
corrosive media, it is recommended to mention this at the ordering stage, 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.

Installation & Operation Manual

Proven Quality since 1892

ECON ball valves Fig. 7343, 7383 www.eriks.com
Rev. 0

7. Installation

During the installation of the wafer type ball valves, the following rules should be observed:

- make sure before an installation that the ball valves were not damaged during the
transport or storage.

- make sure that applied ball valves are suitable for working conditions, medium used in the
plant and the right system connections, according to pressure and temperature limits as
per the tag plate.

- to take off dust caps if the valves are provided with them.

- the interior of the ball valve and pipeline must be free from foreign particles.

- the valve should be assembled in the pipeline in open position, for a correct functioning,
the valve must be stress free mounted in the pipeline, supports must be arranged to
prevent any additional stress, caused by the weight of the valve or the pipeline.

- mount the pipeline in such a way that harmful forces, excessive vibrations, bending and
tensional forces are avoided.

- for easy operating, the clear distance around the lever shall be not less than 100 MM.

- before plant startup, especially after repairs carried out, flush the pipeline, with fully
opened ball.

8. Maintenance

Before starting any service jobs, make sure that the medium supply to the pipeline is stopped,
pressure is decreased to ambient pressure, the pipeline is completely cleaned and ventilated and
the plant is cooled down. Always keep safety instructions in mind and take all personal safety
precautions.

During maintenance, the following rules should be observed:

- keep always personal safety precautions in mind 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 a closed ball can contain medium under pressure and a opened ball can
contain some medium in the cavity-space behind the ball.

- check the ball valve on all possible leakages.

- dust, grease and medium residual, must be frequently cleaned of the valve body and all
moving parts, such as stem, to guarantee all operating functions.

- if required replace the stem seal, for safety reasons we recommend that the stem seal can
only can be replaced when the valve is depressurized, drained and ventilated.

- to ensure a safe operation we recommend to check the ball valves at an interval of three
months.

9. Service and repair

All service and repair jobs should be carried out by authorized staff, using suitable tools and use
original spare parts (packing, gasket, etc.) of the same valve size.

- welding repair and drilling on the valve is forbidden.

- it is forbidden to disassemble the valve and replace seats or seals when the valve is under
pressure.

- before new seats or seals are placed, the areas where they are placed, must be cleaned.

- after replacement of seats or seals it is necessary to check the valve operation and
tightness of all connections. Tightness test should be carried out.

- after installation, we recommend to check the ball valve at an interval of three months.