Parr Instrument Series 4570 - Manual (Page 10)

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4570 HP/HT Pressure Reactors Parr Instrument Company
IDENTIFY THE VALVES
Gas Inlet Valve
The gas inlet valve is easily identified
when the bomb is open by noting that it is
connected to a dip tube that extends to a
point near the bottom of the cylinder. This
valve has an attached fitting which provides
a socket for attaching the A506HC pressure
hose furnished with the reactor.
Gas Release Valve
The gas release valve is installed in a
port without any attachments installed on the
underside of the head. Gas released from
this valve will be drawn from the headspace
of the vessel.
Liquid Sampling Valve
The liquid sampling valve is attached to
the same fitting as the gas inlet valve and
connected to the same dip tube. With this
arrangement, incoming gas is always
introduced below the surface of the liquid
and the operator is provided with a means
for clearing the dip tube to be sure that any
sample taken during a run will be
representative of the charge. This can be
done by opening the upper gas inlet valve
momentarily to allow the inlet gas to force
any liquid in the dip tube back into the
reactor before withdrawing a sample from
the sampling valve.
Safety Rupture Disc
Gas Inlet Valve
Liquid Sampling Valve
Dip Tube
Stirring Shaft
Lower Guide Bearing
Adjustable Impeller(s)
Pressure Gage
Pressure Transducer (optional)
Gas Release Valve
Thermocouple / Thermowell
Cooling Loop
Fixed Head Shown
Magnetic Drive