Mankenberg RP 824 Originalbetriebsanleitung Seite 15

Original operating manual
pilot-operated pressure regulators RP 824
Then the valve should be inspected to ensure that it is clean. Interior parts must be free of liquid (e.g.
condensate): if necessary, connecting branches should be cleaned before installation with clean compressed
air.
The type and dimensions of the line or tank connections must match the valve to be installed and be flush with
the connecting surfaces of the valve as well as in a parallel plane to the valve itself.
CAUTION
If installed against the direction of the arrow, the valve will not perform its
intended function.
The valve is marked with an arrow; the flow in the pipe section must correspond to the
marked flow direction.
The valve must be installed without any tension. In the case of an already installed system, the geometry of the
pipeline must match the face-to-face length of the valve.
NOTICE
Tension from the piping can cause damage to the valve
It is necessary to ensure that no stresses are transferred from the pipeline to the valve,
even under operating conditions.
» A Mankenberg valve made of "high grade" or "high grade pure" stainless steel (austenite, e.g. 1.4404 or
1.4435) does not need any surface protection for normal environmental atmosphere and for normal weather
conditions.
» External parts of the valve made of low-alloy or non-alloy materials that are supplied ex-works with a primer
have to be provided with a suitable coating by the customer.
» A pressure control valve should first be adjusted during the initial start-up by setting the adjusting screw on
the pilot valve to the operating conditions – see section
NOTICE
Never paint over the markings on the valve (laser marking on the body or nameplate).
In addition, the following applies to the pipeline connection: with flanges:
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.
During installation, centre the valve by means of the flange screws on the mating flange before the screws are
tightened.
Additional notes for the pipe connection with welding ends:
RP 824-4.X.231 Issue 17.11.2023
Initial start-up [Page 18].
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