Parr Instrument Series 5500 - Manual (Page 10)

Compact Mini Bench Top Reactors
P a r r I n s t r u m e n t C o m p a n y 10
IDENTIFY THE VALVES
Gas Inlet Valve
The gas inlet valve is easily identified when the
vessel is open by noting that it is connected to a dip
tube which extends to a point near the bottom of
the cylinder. With this arrangement, incoming gas is
always introduced below the surface of the liquid.
This valve includes a coupling with an “A” socket
connection for attachment of the pressure hose.
Gas Release Valve
The gas release valve is typically connected to a side
opening on the gage adapter. Gas released from
this valve will be drawn from the top of the reactor.
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. This provides the operator 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 gas
valve momentarily to force any liquid in the dip tube
back into the reactor before withdrawing a sample
from the sampling valve.
THERMOCOUPLE
GAS RELEASE
VALVE
SPLIT RING
PRESSURE
GAGE
GAS INLET
VALVE
LIQUID
SAMPLING
VALVE
CYLINDER
COOLING LOOP
SHAFT
DIP TUBE
GASKET
PROPELLER
TYP (3) PLACES
MALE CONNECTOR
HEAD
STIRRER BRACKET
MAGNETIC
DRIVE