Series 4520 1 and 2 Liter Bench Top Reactors

Series 4520 1 and 2 Liter Bench Top Reactors 
These 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. 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 operate 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 internal 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.

The standard magnetic stirrer 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.

parr 4520

Series 4520 Reactor Specifications

Shading indicates specifications that change within models
Model Number 4523 4524 4525 4526
Sizes, mL 1000 2000 1000 2000
Maximum Pressure 1900 psi (130bar)
Maximum Temperature
with FKM 0-ring 225 °C
with FFKM 0-ring 275 °C
with PTFE Flat Gasket 350 °C
Vessel Style Fixed Head Moveable
Reactor Mounting Bench Top or Floor Stand
Closure (Cap Screws) Split-Ring (6)
Valve Connections 1/8" Male NPT
Magnetic Stirrer, Model No. A1120HC6
Maximum Torque 16 Inch-Pounds
Impeller(s), 6-blade 2
Pressure Gage, Size 4.5 inches
Range 0-2000 psi (140 bar)*
Temperature Measurement Thermowell
Cooling Coil Optional
Style Serpentine or Spiral
Bottom Drain Valve A465VB, 3/8" NPT
Heater Style Calrod
Heater Power Watts 1000 1500 1000 1500
Stirrer Motor 1/8 hp variable speed*
Electrical Supply
Volts 115 or 230
Maximum Load 14/7 amps*
Vessel Dimensions
Inside Diameter, inches 4.0
Inside Depth,inches 5.4 10.5 5.4 10.5
Weight of Vessel, pounds 28 32 32 36
Reactor Dimensions
Width, inches w/o Controller 16.5 16.5
Depth, inches 23.5 23.5
Height, inches 36 48 36 48
Weight, pounds 125 130 120 125
Spare Parts Kit 4509M

*Other options available. See Options Section and Ordering Guide


Series 4520 Ordering Guide

A composite indentification number to be used when ordering a 4520 Series Reactor can be developed by combining individual symbols from the separate sections.

A 2000 mL, T316SS, reactor with fixed head, general purpose magnetic drive, PTFE gasket, 115V 50/60Hz explosion-proof 1/4 hp motor, 2000 psi gage and programable controller with pressure display module would be listed as:

No. 4524-T-GP-SS-115-XP.25-2000-4843-PDM

Model Gasket Stirrer Material Voltage Motor
No.4524 -T -GP -SS -115 -XP.25 -etc....

    • No. Size Vessel Style
      4523-1000mL Fixed Head
      4524-2000mL Fixed Head
      4525-1000mL Moveable Vessel
      4526-2000mL Moveable Vessel
  • A. Base Model
    • -T PTFE Compression Gasket 350°C
      -O FKM O-Ring 225 °C
      -O FFKM O-Ring 275 °C
  • B. Gasket (Maximum Temp.)
    • -GP General Purpose 16 in-lb
      -HD Heavy Duty 60 in-lb (4523-4524 only)
      -FMD1 Footless General Purpose 16 in-lb
      -FMD2 Footless Heavy Duty 60 in-lb
  • C. Magnetic Stirrer Drive
    • -SS T316 Stainless Steel
      -MO Alloy 400
      -IN Alloy 600
      -HB2 Alloy B-2
      -HC Alloy C-276
      -CS Alloy 20Cb3
      -TI2 Titanium Grade 2
      -TI4 Titanium Grade 4
      -NI Nickel 200
      -ZI Zirconium 702 or 705
  • D. Materials of Contruction
    • -115 115 Volt, 50/60Hz
      -230 230 Volt, 50/60Hz
  • E. Electrical Supply
    • -VS .12 Variable Speed, 1/8 hp
      -VS .25* Variable Speed, 1/4 hp
      -VS .50* Variable Speed, 1/2 hp
      -XP .25* Explosion Proof Variable Speed, 1/4 hp
      -XP .50* Explosion Proof Variable Speed, 1/2 hp
      -AM .25 Air Motor, 1/4 hp
      -AM .50* Air Motor, 1/2 hp
      * Models 4523 and 4524 only
  • F. Motor Option
    • -3000 3000 psi/200 bar
      -2000 2000 psi/140 bar
      -1000 1000 psi/70 bar
      -600 600 psi/40 bar
      -200 200 psi/14 bar
      -100 100 psi/7 bar
  • G. Pressure Gage
    • -No Symbol No Coil
      -CC Spiral Coil
      -SC Serpentine
  • H. Internal Cooling Coil
    • -No Symbol No Bottom Drain Valve
      -BDV Bottom Drain Valve
  • I. Bottom Drain Valve
    • -4843* Programmable Control
      -4870 Process Controller
      -*(A) Add to above for Analog Output (0-5 or 0-10 VDC or 4-20mA)
  • J. Temperature Controller
    • (List All Desired)
      -TDM* Tachometer Display Module
      -PDM* Pressure Display Module
      -HTM* High Temperature Cut-off Module
      -AMM* Ammeter Display Module
      -*(A) Add to above for Analog Output (0-5 or 0-10 VDC or 4-20mA)
      -SVM Solenoid Valve Module
      -CM Communications Module
      -4846 Data Acquisition System
  • K. Control Options
    • (List All Desired)
      -AS Anchor Stirrer
      -CB Catalyst Basket
      -CAD Catalyst Addition Device
      -RC Reflux Condenser
      -RTC Reflux Take-Off Condenser
      -BF Baffles
      -GE Gas Entrainment Stirrer
      -SCP Solids Charging Port
      -ABH Aluminum Block Heater
      -WJ Welded Jacket
  • L. Custom Options
    • -No Symbol No Certification
      -ASME ASME Certification
      -CE/PED European Community Certification/Pressure
      -P Parr Certification
  • M. Certifications

« Reactors