Samson 2413 Series, Монтаж и эксплуатация

Страница: 30 / 52

30 EB 2517 EN
Installation
If the control line connection is located below
the middle of the valve inlet flange, arrange
the compensation chamber at the same level
as the inlet flange. In this case, use a pipe
which is at least ½“ in size for the control
line from the tapping point to the compensa-
tion chamber.
If the control line is connected above the
middle of the valve inlet flange, install the
compensation chamber at the same level as
the upstream pressure tapping point. The ad-
ditional pressure of the condensate head
must be compensated for by adjusting the set
point.
5.3.4 Needle valve
If the regulator tends to hunt, we recommend
installing a needle valve at the control line
connection (16) in addition to the standard
SAMSON screw joint with restriction.
5.4 Additional fittings
5.4.1 Strainer
A strainer installed upstream in the flow pipe
holds back any dirt or other foreign particles
carried along by the medium. For example,
the SAMSON Type 2 NI Strainer is suitable
(
u
T 1015).
The following points must be observed
during installation of the strainer:
– Install the strainer upstream of the
Type 41-73 Regulator.
–
Do not use the strainer to permanently
filter the process medium.
– Select a strainer (mesh size) suitable for
the process medium.
–
Allow sufficient space to remove the filter.
– Observe the flow direction.
–
In horizontal pipelines, the filter element
faces downward.
– Install strainers in vertical pipelines with
the medium flowing upward with the
drain plug facing upward.
Check the strainer at regular intervals and
clean it, if necessary.
Note