Pressure Vessels Selection Guide

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Parr Instrument Company 211 Fifty Third Street
Moline, Illinois 61265-1770
(800) 872-7720 or
(309) 762-7716
Fax: (309) 762-9453

Series 4676-4679 General Purpose Vessels, 2.6-5 Gal


Series 4676-4679 Pressure Vessel Specifications
Shaded bar indicates specifications that change within series.
Model Number 4676 4677 4678 4679
Approximate Sizes, Gallon (Liter) 5 (18.75) 2.6 (10)
Maximum Pressure (MAWP) 1900 psi (131 bar)
Maximum Temperature w/ Corresponding Gasket
   with FKM O-ring 225 °C
   with FFKM O-ring 300 °C
   with PTFE Flat Gasket 350 °C
Vessel Style Floor Stand or Fixed Head Stand with Pneumatic Lift
   Reactor Mounting Moveable or Fixed Head
   Closure Split-Ring (12 Compression Bolts) Split-Ring (10 Compression Bolts)
   Pressure Gage, Size 4.5 inches
      Range 0-2000 psi (140 bar)
   Cooling Coil (Optional) Serpentine
   Bottom Drain Valve (Optional) 1.0″ NPT
Head Style
Opening 1/4″ or 3/8″ NPT w/plug Two valves, Gage, and Rupture Disc
Thermowell No Yes
   Heater Style Flexible Mantle Heater ≤ 200 °C or Band Heater/Ceramic > 200 °C
   Heater Power, Watts 2500 (Moveable), 6000 (Fixed Head) 2500 (Moveable), 3600 (Fixed Head)
Cylinder Dimensions
   Inside Diameter, inches 9.5 7.75
   Inside Depth, inches 16.25 12.2
   Approximate Weight of Cylinder, pounds 375 250
Other options available. See Ordering Guide or call for more information.
Please contact the Parr Technical Service Department to obtain complete system dimensions.


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