Pressure Testing The Pipeline Section - Mankenberg Rp 824 Originalbetriebsanleitung

Original operating manual
pilot-operated pressure regulators RP 824
NOTICE
Gaskets are required for installation
The sealing surfaces on the valve body are designed according to the order confirmation.
The corresponding gaskets are normally not included in the scope of delivery.
Additional notes for the pipe connection 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 valve.
» Under no circumstances may the body of the valve exceed the temperature marked on it; otherwise the
sealing and functional parts will be damaged and the whole valve will become unusable.
NOTICE
When a valve with a body made of "high-grade" or "high-grade pure" deep-drawn parts
(recognizable by the body connection with clamps) is being welded in, the welded joint must
be made with special care; it is advisable to keep the body cool with a damp cloth during the
process.
Failure to observe these instructions may result in warpage of the valve body: Even
0.000394 in / 0.1 mm of permanent warpage in the seat area can render the valve
unusable.

9 Pressure testing the pipeline section

The valve 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 control valve installed:
Back pressure regulator:
The test pressure must not exceed 1.5 times the max. adjustable pressure.
e.g. a setting range of 4 to 8 bar results in a max. permitted test pressure of 8 bar x 1.5 = 12 bar.
Under no circumstances may the test pressure exceed 1.5 times the value marked "PN" or "Class" on
the body.
If any leakage occurs on the valve, section Troubleshooting help should be observed.
NOTICE
If the pipe section is flushed and/or dried after assembly or pressure testing, it must be
ensured that the valve is not damaged by corrosion or excessive temperature.
RP 824-4.X.231 Issue 17.11.2023
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