14
T-Product · GIK, GIK..B · 2004 November
Function
The GIK has 4 basic elements that allow to operate.
These are:
1 Valve seat
A valve seat or orifice through which the gas supply will
flow. This has a disc or plug that can close against the
seat to limit the flow of gas. By moving the disc, the outlet
flow and pressure can be altered from fully open to fully
closed. The position of the disc will determine the flow
and pressure the outlet of the regulator.
2 Internal or external impulse
Usually a tube located on the regulator outlet senses the
outlet pressure. The diaphragm is linked to the valve stem.
A change in the sensed pressure above the diaphragm
causing the restricting element to alter it’s position.
3 Air control line
The air control pressure acts against the force of the
measuring element. When state of equilibrium is achieved
between the measuring element and the loading ele-
ment the resulting position of the restricting element
will determine the outlet pressure. The spring is for fine
adjusting at low fire.
4 Compensating diaphragm
A secondary diaphragm is used in compensated regu
-
lators. This diaphragm has the same area as the valve,
so it compensates the effect of varying inlet pressures
on the valve.
Compensating
Diaphragm
Valve seat
Internal or ex
-
ternal Impuls
Air Control Line
Spring
Working
Diaphragm
To Next Page
Loading...
Need help?
General
