XLC 470
14
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Visual position indicator
The visual position indicator, normally present on CSA
valves unless otherwise stated, is extremely useful to
detect the movement of the shaft therefore of the internal
mobile block during working conditions. This is to assess
the absence of vibrations, chattering and to confirm the
proper behavior of the valve. Entirely made in stainless
steel a transparent glass pipe will show the movement of
the position indicator sliding inside while an air release on
top, operated by a pin (4), will enable customer purge out
air pockets accumulated during working conditions inside
the control chamber of the main valve.
DIsassembly
The CSA position indicator is a sturdy and solid item not
subject to maintenance, in case of frost and unexpected and
accidental impact it may break. For the disassembly simply
hold the lower part (2) and unscrew the upper part (1). Make
sure the plane gaskets (5-6) are not damaged or lost during
this phase, clean and replace if necessary. The glass pipe
(3) can be cleaned in case of dirt accumulated inside and
turbidity. The upper pin (4) is inserted and equipped with an
o-ring, do not remove it unless strictly
N.
Component
Material
1
2
3
4
Upper part
Lower part
Glass pipe
Pin
stainless steel
stainless steel
Pyrex glass
stainless steel
3
4
Gasket
Gasket
Vulkolan
Vulkolan
4
5
3
1
6
2
