Parr Instrument - page 385

126 P a r r I n s t r u m e n t C o m p a n y
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Non-Stirred Pressure Vessels
Parr offers a broad selection of non-stirred
pressure vessels in convenient styles,
sizes and pressure ranges for many laboratory
uses. Recent additions to this line have included
new sizes, new temperature and pressure
combinations and new self-sealing closures, all
designed to provide convenient vessels for labo-
ratory procedures that must be performed under
pressure at elevated temperatures.
Pressure Vessel Selection Procedure
The steps to be followed in selecting a non-
stirred pressure vessel are similar to those used
for a stirred reactor. Selection begins with the
Guide to Non-Stirred Vessels, from which the
user can identify the Model Number for vessels
in a range of sizes with temperature and pres-
sure ratings suitable for the intended application.
Detailed specifications and catalog numbers can
then be found on the referenced page. After the
specifications have been established, the options
and accessories required to customize a com-
plete pressure vessel system can be selected.
Guide to Parr Non-Stirred Vessels
Model Number Vessel Style Vessel Size Max. Press. psi (bar) Max. Temp. °C See PageNumber
4703-4714 Screw Cap 22-45 mL 1700 (115) 300 128
4740-4742 High Pressure 25-75 mL 8500 (575) 350 129
4791-4793 Split Ring 25-100 mL 3000 (200) 350 130
4791HP/HT-4793HP/HT Split Ring 25-100 mL 5000 (200) 500 130
4750-4755 Split Ring 125-200 mL 3000 (200) 350 131
4760-4777 Split Ring 100-600 mL 3000 (200) 350 132-133
4760HT-4768HT Split Ring 300-600 mL 2000 (200) 500 132-133
4651-4653 High Pressure 250-1000 mL 6000 (345) 600 136
4605-4626 High Pressure 600-1200 mL 5000 (345) 350 135
4601-4622 Split Ring 1000-2000 mL 1900 (130) 350 134
4601HP-4622HP Split Ring 920-1850 mL 2900 (200) 350 134
4661-4666 Split Ring 1 & 2 gallon 1900 (130) 350 137
4680-4683 High Pressure 1000-1800 mL 6000 (345) 600 138
4671-4674 High Pressure 1 & 1.5 gallon 3000 (200) 600 139
4676-4679* Split Ring 2.6 & 5 gallon 1900 (130) 350 140
*May be modified for pressures to 5000 psi & temps to 500°C.
Model 4703, 22 mL, with Rupture Disc.
Head Design
Many of the non-stirred vessels offer a basic head with a 1/8" NPT plug. These
should be considered as only a starting point for custom built vessels as they
do not include a safety relief device. Safety codes, good practice,
and common sense dictate that a safety relief device should be installed
on all vessels. The 1/8" NPT plug is provided for the user to install their
own safety relief device.
Users who take delivery of vessels without safety relief devices installed
must take responsibility for installing adequate protective devices before
the vessel is placed in service.