High Temperature/High Pressure
Bench Top,Floor Stand or Cart
Moveable or Fixed Head
Vessel Sizes, mL
3750 – 5500 mL
Standard PressureMAWP Rating, psi (bar)
Standard MaximumOperating Temp. ºC
500 °C with Graphite Flat Gasket
Maximum Operating Temp.,at High Pressure (HP)
500 °C @ 3000 psi
Parr offers a number of different reactors in the 4580 Series in a variety of sizes and with different mountings for operating pressures to 3000 psi (207 bar) and temperatures to 500 °C.
4581 – 4582 Reactor
These 1gallon (3.75 L) and 1.5 gallon (5.5 L) reactors are designed for 3000 psi (207 bar) maximum pressure with a 500 °C maximum working temperature and mounted on moveable carts.
4583 – 4584 Reactors
These are 1 gallon (3.75 L) and 1.5 gallon (5.5 L) fixed head reactors mounted on floor stands with pneumatic lift.
All of these reactors have been designed with suitable valves, fittings and modifications to the vessel itself to operate at the higher temperature and pressure ratings.Flat, flexible graphite (FG) gaskets are used for temperatures in the higher range to 500 °C. These can be replaced with PTFE gaskets for procedures in which the temperature will not exceed 350 °C.