The two stage self-driven pressure regulators series GSR are designed for use in a wide range of both domestic and industrial applications and can also be mounted in individual domestic gas systems and meters.
The two stage self-driven pressure regulators series GSR are designed for use
in a wide range of both domestic and industrial applications and can also be
mounted in individual domestic gas systems and meters.
The regulator can be employed with natural gas, manufactured gas, air
propane and other gases are not corrosive.
Their main features include compact size for space saving, high-quality
materials, high regulation accuracy, easy setting and maximum reliability of safety
devices.
The regulators can also be installed both outdoors and indoor applications with
safely. The internal relief valve vent can be convoyed outside in case of installation
with closed rooms or for underground plants.
Thanks to the concept of double regulation stage, it is possible to achieve a high
accuracy; high operating reliability. Simple installation procedure.
The regulator are manufactured according to TS 10624.
The gas at working pressure initially flows top the inlet connection, then through
the filter and onto the first stage where pressure is reduced to 0.3 bar. Gas is
subsequently conveyed to the second stage where pressure is reduced to the
desired value.
The first stage regulator includes a diaphragm, a spring and a valve. Gas lows
through pad-holder and then into chamber 1.stage at reduced pressure. Reduction
value is preset and depends on the load of spring, which is normally set at 0.2 bar.
The seconds-stage regulator includes a diaphragm, a spring and a valve. The gas
in chamber 1.stage flows into chamber 2.stage and then to utilities. Outlet pressure
can be adjusted by means of ring nut.
Valve travel is limited by excess flow valve, thus limiting regulator capacity.
Whenever the demand for gas exceeds %110 of regulator nominal capacity, excess
flow valve shuts the flow.
Increases in outlet pressure due to defective seal of regulator when closed cause
relief valve opening, thus releasing gas to atmosphere.
The relief valve is also useful in compensating for increase in pressure due to
solar heating in regulators mounted in outdoor individual domestic gas systems
when capacity is zero.
Relief valve triggering value, corresponding normally to 10 mbar above outlet
pressure, cannot be adjusted.
