Pressure Vessels Selection Guide

Need help picking out a pressure vessel? Visit our new 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 4791-4793 General Purpose & High Pressure/High Temperature Pressure Vessels, 25-100 mL

Series 4790 Ordering Guide

The General Purpose Vessels are available in three volumes, each with three valves, dip tube, rupture disc, gage, and thermocouple. The HP/HT Vessels include two valves as standard. All come standard with split-ring closure with six cap screws. These vessels are available as either a movable or fixed head designs.

Click on the selections below to develop a composite identification number which may be used to request a quote or to order a 4790 Vessel.

Please note that all options and combinations are not compatible with all models.

ASeries 4790 Base Model
  Part No. Size, mL Inside Diameter, inches
4791 25 1.0
4792 50 1.3
4793 100 1.3
BMaterial of Construction
-SS T316 Stainless Steel
-MO Alloy 400
-NI Nickel 200
-IN Alloy 600
-HC Alloy C-276
Other materials of construction available. Please call.
CConfiguration Options
-No Symbol Standard configuration, Moveable Head, 350 °C rating
-FH Fixed Head Vessel
DHigh Temperature / High Pressure Options
-HP High Pressure
-HP/HT High Pressure/High Temperature Vessel
EGasket / Maximum Temperature
-T PTFE Gasket, 350 °C
-Q FKM O-ring, 225 °C
-QQ FFKM O-ring, 275 °C
-FG Flexible Graphite, 500 °C (HP/HT option only)
-No Symbol No Certification
-ASME ASME Certification
-CE/PED European Community Certification/Pressure
-CH China Certification
-P Parr Certification

Please note that all options and combinations are not compatible with all models.

If you do not find the pressure, temperature, volume, or options you are looking for here, let us customize a system for you.

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