Richter LPV/F Series Low-Pressure Safety Valves - Manual (Page 6)

Series LPV-A/F, LPV-D/F
Seite 6
9530-060-en Revision 01
TM 7464 Edition 02/2009
2 Notes on safety
This operating manual contains fundamental
information which is to be observed during installation,
operation and maintenance.
It must be read before installation and
commissioning!
For low-pressure safety valves which are used in
potentially explosive areas, see Section 3.
Installation, operation and maintenance are to be
performed by qualified staff.
The area of responsibility, authority and supervision of
the staff must be regulated by the customer.
General hazard symbol!
People may be put at risk.
Safety symbol! The ball valve and its
function may be put at risk if this safety
symbol is not observed.
It is imperative to observe warnings and signs
attached directly to the valve and they are to be kept
fully legible.
Non-observance of the notes on safety may result
in the loss of any and all claims for damages.
Non-observance may involve the following hazards :
Failure of important functions of the valve/plant.
Risk to people from electric, mechanical and
chemical effects.
Risk to the environment through leaks of
hazardous substances.
2.1 Intended use
Richter low-pressure safety valves of the series
LPV-A/F and LPV-D/F are pressure-maintaining
components with safety function in accordance with
the Pressure Equipment Directive (DGRL). They
protect the pressure equipment if the admissible
pressure limit is exceeded.
The valves are suitable for vapours, gases and non-
boiling liquids of group 1 according to the PED and
have a corrosion-resistant plastic lining.
The valves are used to
fill and empty tanks (aeration)
to protect lined vessels against vacuum.
to protect vessels with a layer of nitrogen.
to protect reactor columns.
If the gauge pressure function is desired, the valve is
connected to the pressure system with the inlet flange.
In the case of the low-pressure function the valve is
connected to the pressure system with the outlet
flange.
If the medium contains solids, the manufacturer must
be consulted on whether the valve is suitable for the
application in question.
Solids can lead to increased wear, damage to sealing
surfaces or to a reduction in the service life of the
valve.
Low-pressure safety valves have been set at the
works to the desired test pressure, tested and lead-
sealed.
If the operating parameters are subsequently
changed, the set pressure can be modified by
adding/removing weights, see Section 6.5 and 9.4.
In case of the valve is intended for operating data
other than those intended, the customer must carefully
examine whether the design of the valve, accessories
and materials are suitable for the new application.
Please consult the manufacturer.
2.2 For the customer / operator
If a low-pressure safety valve is used, the operator
must ensure that
hot or cold valve parts are protected by the
customer against being touched
the valve has been properly installed in the pipe
system
the operating conditions stipulated in the data
sheet are not exceeded in continuous operating
mode.
This is not the manufacturer's responsibility.
Loads caused by earthquakes were not allowed for in
the design.
Fire protection to DIN EN ISO 10497 is not possible
(plastic lining and plastic components).
2.3 Improper operation
The operational safety of the valve supplied is only
guaranteed if it is used properly in accordance with
Section 2.1 of this operating manual.
The operation limits specified on the name
plate and in the pressure-temperature
diagram must under no circumstances be
exceeded.
See also improper operation and their consequences
in Section 7.4.