28
P a r r I n s t r u m e n t C o m p a n y
T
hese are the largest of the
Parr Reactors that can be
handled on a bench top. They
can be furnished with either
a self-sealing, O-ring closure
for working temperatures up
to 225 °C or with a flat, PTFE
gasket for higher temperatures
to 350 °C. An optional HP (High
Pressure) flat gasket version
has been added for maximum
allowable working pressure of
2900 psi (200 bar) at 350 °C.
Both fixed head and moveable
vessel designs are available.
Model 4523 Fixed Head Reactor open to show Internal Fittings, and a 4848 Controller shown with optional Expansion Modules.
An optional pneumatic lift is
available for the heavier 2 liter
cylinder and heater. It should be
noted, however, that the 2 liter,
fixed head model is tall and
may not be convenient to oper-
ate on a standard height bench
top. We recommend using a
floor stand. (See Series 4530)
With their larger diameter,
these mid-size reactors have
sufficient space for special
modifications, such as: an inter-
nal cooling coil, bottom drain
valve (not on 2 liter bench top),
ball valve for a solids charging
port, catalyst addition devices,
condensers, electrical feed-
throughs and more. Details are
provided in the Chapter 5 of this
catalog, starting on page 101.
The standard magnetic stir-
rer drive on these 4520 Models
works well for reaction mixtures
with viscosities up to 25,000
centipoise. For heavier stirring
loads, these reactors can be
equipped with larger magnetic
drives, more powerful motors,
and drive trains capable of
delivering additional stirring
torque.
Series 4520 1 & 2 Liter General Purpose Reactor Systems
Series Number:
4520
Type:
General Purpose
Stand:
Bench Top
Vessel Mounting:
Moveable
or
Fixed Head
Vessel Sizes, mL:
1000-2000
970-1900 HP
Standard Pressure
MAWP Rating, psi (bar):
1900 (131)
Standard Maximum
Operating Temp., °C:
225
w/ FKM O-ring
275
w/ FFKM O-ring
350
w/ PTFE Flat Gasket
High Pressure (HP)
MAWP Rating, psi (bar):
2900 (200)
Maximum Operating
Temperature, °C, at
High Pressure (HP):
350
@ 2900 psi
