Installation & Operation Manual
Proven Quality since 1892
ECON safety relief valves Fig. 1514, 1515 and 1516 www.eriks.com
Rev. 4
For a correct working of the safety relief valve, the outlet of the system may certainly not give any
back pressure (OPEN outlet).
Rules for the pressure relief valves under pressure.
Max./min. allowable Pressure P (bar)
Max./min. allowable Temperature T (°C)
6. Application
ECON safety relief valves with threaded connection are mainly applied in the process industry as
a relief valve for thermal expansion. Suitable for gasses and liquids. This type of safety valve is
also suitable as an overflow for the use of extreme conditions e.g. aggressive or abrasive 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 safety relief 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 assembly of the ECON safety relief valves, the following rules should be observed:
- make sure before an assembly that the safety relief valves were not damaged during the
transport or storage.
- make sure that the applied safety relief valves are suitable for the working conditions,
medium used in the plant and the right system connections, according to pressure and
temperature limits as per the tag plate.
- before plant startup, especially after repairs carried out, flash out the pipeline, before
installing the safety relief valves.
- de safety relief valves should always be mounted side up, as mentioned by the vertical
flow direction (pressure under the disc).
- the body part which contains the spring and the adjustable bolt, may not be isolated,
because otherwise the spring gets to warm.
- the interior of the safety relief valve and pipeline must be free from foreign particles.
- the vent line should be for liquids mounted sloped. For gasses and damps the vent line
should be mounted slightly rising.
- the relief opening must be so located, that there cannot be any danger, because of the
blow-off pressure.
- install pipelines so that damaging transverse, excessive vibrations, bending and tensional
forces are avoided.
- the joints on the pipeline must not cause additional stress resulted from excessive
tightening, user shall select proper gaskets according the working temperature, working
pressure and medium.
- the safety relief valves can’t be operated, because they are working on the overpressure
of the medium.
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 in mind and take all personal safety
precautions.
During maintenance, the following rules should be observed:
- always keep 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.
- check the safety relief valve on all possible leaking possibilities.
To Next Page
Loading...
Need help?
General
