48
ASX 176
EN
Use, maintenance and warning instructions
HIGH PRESSURE REGULATOR
|
DESCRIPTION AND OPERATION
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REV. 00
The SSX/176 built-in slam-shut valve consists of:
Pos. Description
1
Slam-shut valve plug
2
LINE OFF 2.0 device
Tab. 4.21.
The LINE OFF 2.0 device (2) consists of:
Pos. Description
4
HP2/2: filtering device of the gas supplying the control circuit; it also acts as a bypass necessary for resetting
the built-in slam-shut valve SSX/176.
5
R44/SS: pressure regulator necessary to decrease the upstream pressure of the equipment to the loading pres-
sure of the SSX/176 built-in slam-shut valve cylinder.
6
AR100: flow lamination valve to adjust the pressure loading speed in the pneumatic circuit and to filter the gas
entering the R44/SS regulator (6).
NOTICE!
The load speed is adjusted by a screw (minimum value 1, maximum value 8).
7
VS/FI: safety valve used to:
• discharge any overpressure generated by malfunction of the R44/SS pressure regulator into the atmosphere;
• protect the entire circuit downstream of the R44/SS pressure regulator.
8
Valve 3/2: used to pressurise and depressurise the chamber (C) of the SSX/176 built-in slam-shut valve.
9
Control pressure switch: through the head of the control pressure switch connected downstream, it is used to
trip the SSX/176 built-in slam-shut valve due to decreases or increases in downstream pressure.
Tab. 4.22.
NOTICE!
To check the position of the plug (1), look at the position of the stroke indicator rod (17) referring to the
glass cover (18):
• fully open 100%;
• closed 0%.
Summary of Contents for ASX 176
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