Pressure Testing The Pipeline Section - Mankenberg NV 93 Betriebsanleitung

In addition, the following applies to the pipeline connection:
with flanges:
The sealing surfaces on the body of the fitting are formed in accordance with the
MANKENBERG order confirmation. The accompanying flange seals are generally not
included in the MANKENBERG supply schedule.
note
• During installation, centre the fitting by means of the flange screws on the mating flange before the
screws are tightened.
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

6 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 float valve installed:
According to EN 12266-1, the test pressure may under no circumstances exceed 1.5 times the value
indicated on the body with "PN" or "Class".
If any leakage occurs on the fitting, Section 10 <Troubleshooting help> should be observed.
A closed float valve may show leakage during the pressure test
(see Section 1 <Intended use>).
If necessary, a shut-off valve must be positioned in the feed pipe
caution
(or be installed for the pressure test).
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
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