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2.2.2 Flowmeter
Flowmeters indicate the relative flows of fuel gas and oxygen, and allow the
correct spraying parameters essential for high efficiency and top quality
coatings, to be achieved more easily and reliably than when using pressure
regulators alone. They are invaluable fault finding aids and can save unwanted
downtime when used in this capacity.
These instruments are mounted on a sturdy steel back plate which allows the
unit to be wall mounted. Left hand threads are standard on fuel gas fittings so
that gas and oxygen hoses cannot be incorrectly fitted. Various Hose
configurations can be supplied.
2.2.3 Air Filtration & Regulation Unit (ARF)
When connected to a suitable air supply this unit provides filtered air to
the nozzle system, and lubricated filtered air to the pistol power unit.
Nozzle Air Pressure is adjustable using the integral regulator.
A sight glass at the top of the lubricator, makes it simple to observe the
rate of oil feed to the motor. The oil feed adjustment on the top of the
lubricator, controls the oil feed rate. Only high quality light lubricating oil
such as Metallisation Lubricating Oil should be used.
2.2.4 Pressure Regulators & Flashback Arrestors
The pistol should be used with Metallisation high flow two stage
regulators, which are supplied with the correct fittings for connection to
the MK73.
It is imperative that these regulators are fitted with Flashback Arrestors
which will protect the Fuel Gas and Oxygen supplies in the event of a
flashback (a flame travelling back up the hose).
Metallisation Flashback Arrestors are recommended. All pressure and flowmeter settings
given in this manual are correct for this type only.
When using long regulator to flowmeter hose supplies 20m +, on gas systems the Inline
flashback arrestors 21125 oxygen arrestor and 21124 propane / acetylene arrestor MUST be
fitted to the flowmeters.
2.2.5 Freestanding Flamespray Control Board
For some installations a Panel Mount Oxygen Regulator can be fitted
to the panel (A) along with secondary flash back arrestors and a
emergency shut down valve assembly (B).
The Local oxygen regulator allows for precise flame adjustment where
the supply cylinders are not close by the spraying area.
The additional flashback arrestors are fitted to add additional protection when using very long
3/8” hoses. The emergency shutdown valve assembly is fitted to enable a complete gas shut
off to the pistol in the event of a malfunction, i.e. a flashback.
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