Econ 1515, 1514, 1516 Installation & Operation Manual

Installation & Operation Manual

Proven Quality since 1892

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. Assembly

11. Possible danger

12. Troubleshooting

13. Removal

1. ERIKS operating companies

ECON safety relief 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 safety relief valves have very precise fabricated sealing surfaces and conductivity, to
guaranty a good function. For this reason, safety relief valves have to be handled very careful.
The marking makes the identification of the valve easier and contains:

- size

- set pressure

- maximum temperature Tmax

- heat number

- ECON logo + figure number

- year of fabrication

- CE marking and identification number of the inspection authority

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 disc complete closed and the safety
relief valve should be protected against external forces, influence and destruction. The safety relief
valve 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 safety relief valves have as function to protect the system against excessive pressure. At a
safety relief valve, the following pressures can occur:

- Working pressure, the pressure in the system

- set pressure, the adjusted pressure at which the safety relief valve under normal use
circumstances is opening. The forces on the disc are in balance.

- colt test pressure, the adjusted static inlet pressure, at which the safety relief valve on the
test bench starts to open.

- back pressure, the sum of pressure built up in the vent line when relief and the pressure in
the vent line when this is part of a system with a higher pressure than the ambient
pressure.

Measured pressures are barg pressures.

ECON safety relief valves Fig. 1514, 1515 and 1516 www.eriks.com
Rev. 4

Installation & Operation Manual

Fig.1514

Fig.1515

Fig.1516

Max./min. allowable Pressure P (bar)

20/0

42/0

130/0

200/0

Max./min. allowable Temperature T (°C)

160/0

200/0

200/0

20/0

Proven Quality since 1892

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.

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.

ECON safety relief valves Fig. 1514, 1515 and 1516 www.eriks.com
Rev. 4