27
P a r r I n s t r u m e n t C o m p a n y
1 - 8 0 0 - 8 7 2 - 7 7 2 0
2
S t i r r e d R e a c t o r s
higher coupling torque and more powerful motors are
available for higher viscosity applications.
Also, many reactors require a lower support bracket to
stabilize the stirring shaft. In applications with abrasive
particles or heavy mixing, a “footless” magnetic drive
with a larger diameter shaft may be provided.
5. Cooling Coil
An internal cooling coil can be installed in all reactors
(except the Micro sizes) to remove the heat of a reaction
and/or to cool the vessel at the end of a run. In some
reactors a cooling coil is furnished as a standard fitting.
In others, a coil can be added as an option in either
serpentine style or alternately in a spiral style for selected
models. For the micro sizes, with their limited dimen-
sions, a cold finger may be added as an option
6. Gage and Rupture Disc Ranges
The pressure gage range must be selected to pro-
vide the resolution desired, while having a range high
enough to handle the maximum pressure the reactor will
undergo. One would be tempted to simply get a gage
with the largest range possible, but this can reduce the
resolution to unacceptable levels. One good rule of thumb
for good resolution is to operate with the gage at half of
its maximum range.
The rupture disc is most commonly matched to the
Maximum Allowable Working Pressure of the vessel,
ensuring the disc will burst before reaching a pressure
beyond the MAWP range. Care must be taken not to
take the vessel above 90% of its burst pressure under
normal operation. This will help protect the disc from the
effects of repeated pressure cycles.
7. Controller Options
Parr controllers are typically set up to control tem-
perature, but may also be set up with digital pressure
displays, stirring speed, secondary temperature, and
other displays and controls.
These may be set up with data logging via PC as
well. For more information on these options, see the
“Controller Section” of this catalog.
8. Certification
ASME, CE, CHINA, and Parr Certifications are available
for users who require these recognized quality assurance
certifications.
9. Custom Options
A wide range of custom options such as special
openings in the head or cylinder, high viscosity stirrers,
windows, special valves, heaters or jackets, explosion
proof wiring, and volume modifications are available.
Various accessories, such as glass or PTFE liners,
condensers, catalyst holders, and alternate stirrers are
available to further adapt these reactors to the individual
user’s applications.
Detailed information for these and other options are
in Optional Fittings, Chapter 5, starting on page 101 of
this catalog.
How to use the Ordering Guide:
A.
B.
C.
D.
E.
F.
G.
H.
I.
J.
Model
Gasket Material Stirrer Drive MOC Voltage Motor Gage BDV
Controller
No. 4568 -OV
-SS
-GP
-No Symbol -115
-XP.25 -3000 -No Symbol
-4848
No. 4568- OV-SS-GP-115-XP.25-3000-4848
T
he last page of each Reactor Series in this chapter
is an Ordering Guide. A composite identification/
order number can be generated by combining the
individual symbols from the separate sections.
In the following example: Using the Ordering Guide
from the Series 4560 Stirred Reactors for our sample
order, we have chosen to order a 600 mL fixed head
reactor, FKM O-ring, the vessel manufactured out of
T316 Stainless Steel, a general purpose magnetic drive
also made of T316SS, 115V power supply, 1/4 hp
explosion-proof motor, 3000 psi pressure gage, no
bottom drain valve, and a 4848 controller.
The order number for that particular configuration
would appear as follows:
