Parr Instrument 4703, Operating Instructions Manual, Page: 2 / 36

Table of Contents
P a r r I n s t r u m e n t C o m p a n y
2
PREFACE 3
Scope 3
Related Instructions 3
Intended Usage 3
Safety Information 3
Explanation of Symbols 4
Environmental Conditions 4
Unpack Carefully 4
Provisions for Lifting and Carrying 4
Cleaning and Maintenance 4
User’s Responsibility 5
Pressure and Temperature Limits 5
CLOSURES 6
Split Ring Closures 6
Split Ring Closure Operations 6
Screw Cap Closures 6
Operating 4700 Screw Cap Vessels 6
PARR PRESSURE VESSEL SEALS 7
Flat Gasket or Self Sealing O-ring Closure 7
Seals for Operating Temperatures up to 350 °C 7
Gaskets for Operating Temperature above 350 °C 7
Sealing the Vessel 7
Vessels with an O-ring seal 7
Vessels with a Flat PTFE or Flexible Graphite Gasket 8
Vessels with a Metal Gasket 8
Sealing 4740 High Pressure Vessels 8
OTHER VESSEL HEAD FITTINGS 9
Gage Block Assemblies 9
Pressure Gages 9
Safety Rupture Discs 9
Coned Pressure Fittings 9
Tapered Pipe Threads 10
MAINTENANCE 10
General Maintenance Notes 10
Periodic Pressure Tests 11
HEAD ASSEMBLY GUIDE 12
MATERIAL DESIGNATIONS 12
Material Designations for Alloys other than T316SS 12
Gasket Material Designations 12
SERIES 4700 WORKING LIMITS AND PARTS LISTS 13
Series 4703-4714 13
Series 4740 14
Series 4750 15
Series 4760-4777 16
Series 4760Q-4777Q 18
Series 4790 20
SERIES 4600 WORKING LIMITS AND PARTS LISTS 22
Series 4600-4620 22
Series 4600Q-4620Q 23
Series 4605-4626 24
Series 4650 25
Series 4660 26
Series 4660Q 27
Series 4670-4674 28
Series 4676-4677 29
Series 4678-4679 30
Series 4680 31
4316 & 4317 GAGE BLOCK ASSEMBLIES 32
Gage Block Parts List 32
Gage Block Assembly Drawing 34
Customer Service
Questions concerning the installation or operation
of this instrument can be answered by the Parr
Customer Service Department:
1-309-762-7716 • 1-800-872-7720
Fax: 1-309-762-9453
E-mail: parr@parrinst.com
http://www.parrinst.com