Stirred pressure vessels
Parr offer two styles of lab scale pressure vessels – the 4500 range and the Series 5550 Compact Lab Reactor. These are overhead stirred reactors using magnetically coupled mechanical drives ensuring that there is efficient mixing inside the pressure vessel.
As with all of Parr’s pressure vessels these are manufactured to comply with the Pressure Equipment Directive (PED) and the other EU legislation appropriate for laboratory equipment.
4500 Pressure Vessels
Parr supply a family of stirred pressure vessels ranging from 25ml to 5 USG (18.75L). These are split into 7 series which all follow the same design principles and use Parr’s extensive design and manufacture capabilities to ensure that the systems are as user friendly as possible without compromising the pressure vessel safety.
The ranges are
| Model | Nominal Volumes | Rating | Reactor style |
| 4590 | 25, 50 and 100 ml | 200 bar at 350 oC | Benchtop |
| 4590HP | 25, 50 and 100 ml | 345 bar at 350 oC | Benchtop |
| 4590HPHT | 25, 50 and 100 ml | 345 bar at 500 oC | Benchtop |
| 4560 | 100, 160, 300, 450 and 600 ml | 200 bar at 350 oC | Benchtop |
| 4560HT | 100, 160, 300, 450 and 600 ml | 138 bar at 500 oC | Benchtop |
| 4570A/B | 250 and 500 ml | 345 bar at 350 oC | Benchtop |
| 4540 | 600 and 1200 ml | 345 bar at 350 oC | Benchtop |
| 4520 | 1000 and 2000 ml | 131 bar at 350 oC | Benchtop |
| 4520HP | 970 and 1900 ml | 200 bar at 350 oC | Benchtop |
| 4530 | 1000 and 2000 ml | 131 bar at 350 oC | Floor stand and cart |
| 4530HP | 970 and 1900 ml | 200 bar at 350 oC | Floor stand and cart |
| 4570 | 1000 and 1800 ml | 345 bar at 350 oC | Floor stand and cart |
| 4580 | 3.75 and 5.5 L | 200 bar at 300 oC | Floor stand and cart |
| 4550 | 3.75 and 7.50 L | 131 bar at 350 oC | Floor stand and cart |
| 4550 | 10 and 18.75 L | 131 bar at 350 oC | Floor stand and cart |
5500 Compact Lab Reactor
The Compact series (25 – 600ml) was developed with the academic user in mind where a simple entry level system is of interest. This system uses standard Parr pressure vessels with lower specification components than what is found on the 4500 series vessels. However the lower coupling force on the mag drive, the lower powered direct drive motor and aluminium heater are highly suitable for small scale R&D where working conditions are under 200bar and 350oC. Due to the small footprint of the system this has become a very popular unit where space is at a premium.
If you are unsure which model best fits your needs just Contact Us to speak to a specialist.
Please also visit the Parr Website for further information: 
