Manual
Technical Document No. TP-V300 Effective: May 1997
Crosby Pressure Relief Valve Engineering Handbook
®
An FMC Corporation subsidiary
Table of Contents
Notes:
CROSBY® Pressure Relief Valve ENGINEERING HANDBOOK
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CONTENTS
Chapter 1 Chapter 2 Chapter 3 Chapter 4 Chapter 5 Chapter 6 Chapter 7 Appendix Other InformationIntroduction to Crosby Engineering Handbook Fundamentals of Pressure Relief Valve Design Terminology Codes and Standards - Summary Valve Sizing and Selection - U.S.C.S.* Units Valve Sizing and Selection - Metric Units Engineering Support Information ASME Section VIII, Division 1, 1992 Edition Exerpts Ordering Information Pressure Relief Valve Specification Sheet
Warning: The information containedin this handbook is for informational purposes only. See also Crosby's computer sizing program, CROSBY-SIZE. The actual selection of valves and valve products is dependent upon numerous factors and should be made only after consultation with applicable Crosby personnel. Crosby assumes no responsibility for the actual selection of such products and hereby expressly disclaims liability for any andall claims and damages which may result from the use or application of this information or from any consultation with Crosby personnel.
*United States Customary System
Crosby® Engineering Handbook Technical Publication No. TP-V300
Chapter I
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Introduction
The Crosby® Pressure Relief Valve Engineering Handbook contains important technical information relating to pressure reliefvalves. The primary purpose of a pressure relief valve is protection of life and property by venting fluid from an overpressurized vessel. Information contained in this handbook applies to the overpressure protection of pressure vessels, lines and systems. Reference is made to the ASME Boiler and Pressure Vessel Code, Section VIII, Pressure Vessels. The information in this handbook is NOT to be usedfor the application of overpressure protection to power boilers and nuclear power plant components which are addressed in the ASME Boiler and Pressure Vessel Code, Section I, Power Boilers, and Section III, Nuclear Power Plant Components, respectively. Proper sizing, selection, manufacture, assembly, test, installation and maintenance of a pressure relief valve are all critical to obtaining maximumprotection. This handbook has been designed to provide a service to Crosby’s customers by presenting reference data and technical recommendations based on our many years of experience in sizing, selecting, testing, installing and operating pressure relief valves. Sufficient data is supplied so to properly size and select Crosby pressure relief valves for specific applications. Informationcovering terminology, standards, codes, basic design, sizing and selection information, including examples, are presented in an easy to use format. Some of the material in this handbook is reprinted or excerpted from publications developed by associations or committees in which Crosby has participated. The information contained in the manual is offered as a guide. Those who use the information arereminded of the limitations of such a publication and that there is no substitute for qualified engineering analysis. Crosby pressure relief valves are manufactured in accordance with a controlled Quality Assurance Program which meets or exceeds ASME Code Quality Control Program requirements. Capacities are certified by the National Board of Boiler and Pressure Vessel Inspectors. These features areassured by the presence of an ASME Code Symbol Stamp and the letters NB on each valve nameplate. Crosby's valves are designed, manufactured and tested in accordance with a quality management system approved to the International Standard Organization's ISO 9000 Quality Standard Series requirements. With proper sizing and selection, the user can thus be assured that Crosby products are of the highest...
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