Samson 2413 Series, Mounting And Operating Instructions

Page: 29 / 52

EB 2517 EN 29
Installation
5.3 Control line, compensation
chamber and needle valve
5.3.1 Control line
The control line must be provided at the site
of installation, e.g. a
3 /
8
“ pipe for steam or
an 8x1 or 6x1 mm pipe for air/water.
Connect the control line to the upstream line
(p
1
) at least one meter away from the valve
inlet.
Weld the control line at the side in the mid-
dle of the pipe, inclining at a ratio of ap-
proximately 1:10 up to the compensation
chamber.
5.3.2 Control line kit
A control line kit for tapping pressure directly
at the valve body is available as an accesso-
ries part from SAMSON.
5.3.3 Compensation chamber
Î
Refer to Table 8
A compensation chamber (18) is required
for liquids above 150 °C as well as for
steam. The mounting position of the compen-
sation chamber is indicated by an adhesive
label on the chamber itself as well as by an
arrow and the word "top" stamped on the
top of the chamber.
This mounting position must be adhered to;
otherwise the safe functioning of the excess
pressure valve cannot be guaranteed.
Weld the line coming from the pressure tap-
ping point to the
3
/
8
“ pipe socket on the
chamber. Install the compensation chamber
at the highest point of the pipeline. Conse-
quently, the control line between compensa-
tion chamber and actuator must also be in-
stalled with a downward slope. In this case,
use a
3
/
8
“ pipe with screw fittings.
1 Shut-off valve
2 Strainer
3 Upstream pressure gauge
4 Excess pressure valve
5 Downstream pressure gauge
18 Compensation chamber, e.g. for steam
1 2 4 3 5 1 18
Fig. 7: Pressure control with Type 41-73 (installation example)