SEMPELL SERIES VSE/VSR FULL LIFT AND NORMAL SAFETY RELIEF VALVE
OPERATING INSTRUCTIONS
Before installation these instructions must be fully read and understood
1 DANGER AND WARNING INDICATIONS
The construction of the Sempell safety valves
corresponds to the latest state of engineering
and the valid safety regulations.
Nevertheless, improper use or improper
installation can cause risks for the personnel
or can lead to restrictions in regard of
the operational safety. Therefore, the
SempellGmbH recommends the operator of
the safety valves to take appropriate measures
and make
sure that the present operating
instructions are read and understood by the
assigned personnel.
ATTENTION
This operating instruction does not specify the
extent of delivery. It is valid for several sizes,
designs, accessories and additional devices.
It contents generally exceeds the contractual
determined extent of delivery.
Series
VSE/VSR Full lift and normal safety relief valve.
VSE 1 open spring bonnet
VSR 1 open spring bonnet and adjusting ring
VSE 2 closed spring bonnet
VSR 2 closed spring bonnet and adjusting ring
VSE 4 closed spring bonnet, weight-loaded
Orifice letters
SKB (Sempell): A - Z
SKB (API): EA - TA
Design
According to TO.271.01./271.02. and
TO.272.01./271.02.
• Spring-loaded (cylindrical compression
spring)
• Weight-loaded
• Roller bearing up 8 kN spring force
• Cooling spacer for medium
temperatures ≥400°C
Attachment
• Pneumatic measuring device A 143 for
adjusting the set pressure at operating
pressure
For the application of a pneumatic actuator
A160 see corresponding operating instruction
VCIOM-02239.
Observe design data on the tagplate!
APPLICATION LIMITS
It is only allowed to use the valves according to
the details of these operating instructions and
according to the parameters and application
cases agreed in the delivery contract (see
nameplate). The application of the valve has to
take place adequate to the medium tolerances of
the used materials.
WARNINGS FOR THE OPERATING AND
MAINTENANCE PERSONNEL
Before commissioning and maintenance works
familiarise yourself with the legal accident
prevention regulations, the local safety
instructions and this operating instruction and
observe them.
Use the safety valve and its individual parts and
accessories only for the purpose intended by us.
Please observe the following points besides
the notes given in the text:
• Danger of burning at safety valves and with
the connected pipes while operating under
increased temperature.
• Disassembly of the safety valve only in case of
pressureless plant and after cooling down.
• Protection against risks caused by
evaporation also in case of pressureless
system; for information please contact the
safety inspector concerned.
• After assembly check all sealing points in
regard of tightness.
• In case of adjustment make changes at
pressure screw and adjusting ring only with
clearly reduced pressure to avoid unintended
response.
• Carry ear protection during adjustment,
ifnecessary.
• Danger of burning by discharge of small
amounts of possibly hot medium in case
of safety valves with open spring bonnet
(VSE1,VSR 1).
• Danger of injury while discharging at
disconnected discharge line.
• Extreme vibrations can lead to inadmissible
increase of operating pressure with the
possibly destruction of the safety valve or to
the destruction of the balanced bellows with
unintentional escape of medium.
VCIOM-02450-EN 16/07
Exclusion of liability
Sempell GmbH cannot be held liable in case
of improper maintenance and adjustment of a
Sempell safety valve, use of inadmissible spare
parts or utilities and in case of a temporary or
permanent connection of equipment with the
safety valve which is not approved by us.
MA.271.01.0116.E
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