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1 Manual shut off valve (Main Line Valve)
This is used as interface between main gas supply line
and the engine gas piping. This can be used for isolating
main gas supply line for any repairs on gas supply system
parts
2 Gas Filter
This filter is provided to remove any dust, rust or solid
particles entering the gas supply system.
3 Gas shut-off valve (Electrical)
This valve is electrically operated by 24 volts DC supply.
This provides electrical on / off operation and is connected
in series with engine safety shut off system (viz. High
water temperature, low lub oil pressure, over speed).
4 First Stage Pressure Regulator
This regulator is smaller in size and is red in colour. This
main line regulator is mounted in gas line near engine.
While setting outlet pressure, the brass spindle should be
rotated clock wise to increase the pressure and anti-
clockwise to decrease the pressure so as to adjust the
outlet pressure to 0.5 Kg/cm
2
(7 psi). Proper care should
be taken during installation of this regulator by ensuring
the IN/OUT markings are properly connected.
5 Second Stage Pressure Regulator
The second stage regulator is bigger in size as compared
to 1st stage (main line) regulator and is in blue colour.
This regulator should be mounted near the engine
carburettor. It should be supported firmly and a flexible
connection should be provided between the regulator and
the carburettor. Provide necessary connection on piping
for pressure measurement before and after this regulator.
Unscrew the top cover for setting the outlet pressure. The
outlet pressure can be adjusted by means of a 14 mm
allen key. The gas pressure just before should be set as
follows :
Typical Gas Pipe Line Arrangement.
Gas Filter
Element Gas Filter
First Stage Regulator
Second Stage Regulator
GAS REGULATOR
(II STAGE)
FLEXIBLE PIPE JOINT
MAX. 8” WC OR
200 MM WC
GAS REGULATOR
(I STAGE)
CARBURETOR
MOUNTED ON
GAS ENGINE
GAS SHUT OFF VALVE
(ELECTRICAL)
ASSLY. GAS FILTER
GAS SHUT OFF VALVE (MANUAL)
7 PSIG 20 PSIG
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