Setting The Pressure; Pressure Testing The Pipeline Section - Mankenberg Rp 824 Originalbetriebsanleitung

Original operating manual
pilot-operated pressure regulators RP 824
with screw-mountings:
The connecting surfaces on the body of the fitting are formed in accordance with the
MANKENBERG order confirmation. The required seals are generally not included in the
MANKENBERG supply schedule.
note
with welding ends:
Properly performed welding must ensure that no significant tension is transferred to either the section of pipeline
or the body of the fitting.
Under no circumstances may the body of the fitting exceed the temperature marked on it; otherwise the sealing
and functional parts will be damaged and the whole fitting will become unserviceable..
When a fitting with a body made of "high grade" or "high grade pure" deep-drawn parts (visible
on the body connection with clamp rings) is welded, the welding joint must be carried out with
special care; it is recommended that the body should be kept cool with a damp cloth..
caution
Failure to observe this instruction may cause distortion of the fitting body: even 0.1 mm of
permanent distortion in the seat region may render the fitting unserviceable..

8 Setting the pressure

Back pressure regulators are normally supplied by us with a relaxed spring. The required pressure should be
set under operating conditions. The adjustment of the desired set point by tensioning the spring should be done
while under flow.

9 Pressure testing the pipeline section

The fitting has already been pressure-tested by the manufacturer. The following points should be observed
when conducting a pressure test on a pipeline section with a pressure-regulating valve installed:
Pressure-reducing valve:
the test pressure must not exceed 1.5 times the max. adjustable outlet pressure.
e.g. a setting range of 4 to 8 bar gives a max. permitted test pressure of 8 bar x 1.5 = 12 bar.
The test pressure on the inlet pressure side is determined by the pressure marked on the body.
Back pressure regulator:
the test pressure must not exceed 1.5 times the max. adjustable inlet pressure.
e.g. a setting range of 4 to 8 bar gives a max. permitted test pressure of 8 bar x 1.5 = 12 bar.
In keinem Fall darf der Prüfdruck das 1,5-fache des Wertes überschreiten, der mit "PN" oder "Class" am
Gehäuse gekennzeichnet ist.
Vacuum control valve:
the test pressure must not exceed 1.5 times the max. adjustable pressure. The information described above
should be observed according to whether a pressure-reducing or back pressure regulator forms the basis
for the vacuum control valve.
If any leakage occurs on the fitting, section
If the pipe section is flushed and/or dried after assembly or pressure testing, it is necessary to
make sure that the fitting has not been damaged by corrosion or excessively high temperature.
note
operating_manual_RP824_en_de.25.1 Issue 22.12.2025
Troubleshooting help [Page 17]
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should be observed.
Made in Germany