Safety Instructions; General Precaution; Special Safety Instructions For The Plant Operator; Special Hazards - Mankenberg UV Originalbetriebsanleitung

Original operating manual
spring-actuated pressure control valves UV

5 Safety instructions

5.1 General precaution

The same safety regulations apply to a valve as to the system into which it is installed.
These instructions only give those safety recommendations that have to be additionally observed for the valve.

5.2 Special safety instructions for the plant operator

The following requirements for the intended use of a valve are not the responsibility of the manufacturer but
have to be guaranteed by the user:
» The valve may only be employed for the purpose described in section
» Only competent specialist personnel may install, operate and service the valve. Competent as defined in
these instructions refers to persons who, because of their training, specialist knowledge and professional
experience, are capable of correctly assessing and properly executing the work with which they are
entrusted and of recognizing and rectifying hazards.
» The pipeline system must be properly designed and installed so that the valve can be mounted and
operated without any tension.
» The valve must be properly installed in the correct mounting position.
» The recommended installation, as described in the relevant Mankenberg data sheet, must be used for the
pipeline section into which the pressure-regulating valve is installed. All control and/or leakage lines that are
required on the pressure-regulating valve must be laid properly, in accordance with the accompanying
Mankenberg data sheet.
» A pressure-regulating valve with an open spring must be installed in such a way that it presents no risk of
crushing to the operating personnel.
» The usual flow rates should not be exceeded in the pipeline section during continuous operation, and
abnormal operating conditions such as vibrations, unusually high flow rates, etc. should be avoided or – if
unavoidable – clarified with the manufacturer in advance.
» The prevailing operating conditions must comply with the limits of the design data stated in the Mankenberg
order confirmation.
» The corrosion protection for the valve must be adapted to the local environmental conditions.
» The valve must not be coated with thermal insulation.
Detailed notes are provided on some of these prerequisites in the following sections.

5.3 Special hazards

Before a valve is removed from the system or before a valve is dismantled but partially remains
in place, the pressure in the system on both the inlet and outlet side must be completely
reduced so that there is no uncontrolled flow of the medium out of the system.
danger of
fatalities In the case of toxic or hazardous media, the system must be completely drained before the
valve is removed.
Caution is required with residues that might continue flowing.
UV-4.X.23.2 Issue 16.08.2023
Intended use [Page 6]
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