Samson 2417 Series - Control Line, Compensation Chamber, and Needle Valve

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ttings.
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
12 435118
Fig.7: Pressure control with Type41-73 (installation example)