Cleaning The Pipeline - Samson 45-1 Mounting And Operating Instructions

or prepared as necessary before install-
ing the valve.
Proceed as follows:
Î Lay out the necessary material and tools
to have them ready during installation
work.
Î Flush the pipeline before installing the
regulator (see Chapter "Cleaning the
pipeline").
The plant operator is responsible for
cleaning the pipelines in the plant.
Î Check any mounted pressure gauges to
make sure they function properly.
Table 5-1: Inlet and outlet lengths (valve) and control line connections
External
control line
State of process
medium
Gas
Liquid
EB 3124 EN
min. min.
a x DN b x DN
min.
b x DN
DN
Valve conditions
Ma ≤ 0.3
Free of cavitation/w < 3
Cavitation producing noise/w ≤ 3

5.2.1 Cleaning the pipeline

We recommend additionally flushing the
pipeline without an installed regulator over a
time period of several minutes before start-
up. In this case, install a suitable length of
pipe into the pipeline in place of the regula-
tor.
Î Before flushing the plant with the process
medium, read the section 'Starting up the
plant' in the 'Start-up' chapter.
Î Observe the mesh size of the upstream
strainer for the maximum particle size.
Use strainers to suit the process medium.
Î Check the strainer for dirt each time the
pipeline is flushed and clean it, if neces-
sary.
min.
a x DN
m /
s
/
m
s
Control line connection, depending
on how the pipeline is routed and
depending on the components
a Inlet length
b Outlet length
Inlet length a Outlet length b
2
2
2
Installation
4
4
4
5-3