Installation & Operation Manual
Proven Quality since 1892
ECON safety relief valves Fig. 1514, 1515 and 1516 www.eriks.com
Rev. 4
- check if all bolts and nuts, are still fastened.
- check if the disc still opens and closes in a proper manner.
- the thickness of the body must be checked to ensure safety operation at an interval of at
least three months.
9. Service and repair
All service and repair jobs should be carried out by authorized staff, using suitable tools and user
shall use valve parts, bolt and nut of the same size and material as the original one.
- weld repair and drilling of the valve is forbidden.
- it is forbidden to replace the bolt, nut or packing when the valve is under pressure.
- after replacement, service or blow-off pressure adjustment, it is necessary to check the
safety relief valve on good functioning and tightness of all connections.
- after installation, the safety relief valve should be checked and maintained periodically at
least every 3 months, depending on the medium.
10. Assembly
The assembly of the spring according drawing D31761 goes as follows:
- take care that the pin pos.7 is fitted in the bush pos.3 and the spring plate pos.8 is
mounted on the pin of pos.7
- mount the right spring pos.9 on the spring plate pos.8
- place the spring plate pos.10 on the spring
- screw the adjustable bolt pos.11 with the nut pos.12 in the body pos.1 Now we can
tension the spring
- after adjustment on the right pressure, the adjusting bolt has to be fixed by the nut. This
happens when we turn/fixe the nut against the body.
- after adjustment, when required, the safety relief valve can be sealed by ERIKS or by
another approval authority.
The springs are classified according the pressure range. The choice of the spring depends on the
set pressure. After disassemble one should take care that the right spring and other parts stick
together with the safety relief valve.
11. Possible dangers
Leakage can cause danger of the safety and health of persons, animals and goods. Even when
the safety relief valve is functioning well, there can occur dangers which one must take into
account.
Following dangers can occur:
- the safety relief valve blows off and abrasive, poisoned, colt or hot medium can escape.
This can be prevented by making a shield or to move the outlet. One can also collect the
medium in a tank.
- the safety relief valve leaks and abrasive, poisoned, colt or hot medium can escape. This
can be prevented by making a shield or to move the outlet. One can also collect the
medium in a tank.
- the safety relief valve is wrong calculated or is not working alright and because of cracking
abrasive, poisoned, colt or hot medium can escape
- injury by hot, colt or sharp parts. This can be avoid by shielding or isolation.
- the medium can freeze, at the start-up of the safety relief valve and blocking the disc.
Thinking is particular of the temperature fall, which occurs when gasses expand.
- a dangerous noise level, when the medium blows off.
- medium that escapes very fast out of the outlet
- chemical burns, injury or poisoning because of left behind medium in the valve. This can
be avoid by flushing the installation, before assembly.
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