The diagram shows in simplified form the path of gas through
Gasfuse. Here's the sequence of normal gas flow.
1) Gas enters the Gasfuse directly from the cylinder
2) Gas is channeled into a chamber, where it passes the shutoff
element.
3) Gas is then channeled up out of the chamber and past the gauge
pin.
4) Gas then exits
The various uses of Gasfuse all follow from this sequence. Importantly,
the gauge pin is directly attached to the gauge, and acts as a pressure
detector, which causes the gauge to show changes in gas pressure
via movement in the needle.
How Gasfuse™ Stops Major Leaks
The shutoff mechanism works on the Bernouilli effect. A sudden
increase in gas flow (for example from the hose rupturing)
changes the pressure around the shut off element, lifting it up
and causing it to plug the exit to the chamber and stop the flow
of gas completely.
The shutoff element will stay in this position until you push down
on the gauge. The gauge pin then pushes the shutoff element back
down into the chamber, so resetting the Gasfuse ready for normal
operation.
How Gasfuse™ Detects Small Leaks
By turning the cylinder on and the appliance off, you allow gas
to fill the Gasfuse, gas hose and all gas pipes and manifolds, all
the way up to the appliance.
When you turn the gas cylinder off, the gas should stay in the Gasfuse,
hose and inside the appliance. If there is any leak, the pressure
should drop because gas is escaping but not being replenished (because
the cylinder is off). The drop in pressure will be detected by the
gauge pin, causing the needle to move downwards. Click for more
detail
How Gasfuse™ Tells You
That You're Low On Gas
The gauge detects pressure through the gauge pin. When gas in the
cylinder is low, the pressure drops and the needle falls towards
the red section of the gauge.
