Abstract
This chapter provides information of safety valves. It presents a diagram illustrating the functions of a safety valve. All compressed air systems that use a positive-displacement compressor must be fitted with a pressure relief or safety valve that will limit the discharge or inter-stage pressures to a safe maximum limit. Most dynamic compressors must have similar protection because of restrictions placed on casing pressure, power input, and/or keeping out of surge range. The chapter provides the two types of pressure relief devices—safety valves and relief valves. Safety valves are used with gases. The disc overhangs the seat to offer additional thrust area after the initial opening. This fully opens the valve immediately, giving maximum relief capacity. These are often called pop-off safety valves. Positive-displacement machines use safety valves. There are ASME standards of materials and sizing, and only ASME-stamped valves should be used. The relieving capacity of a given size of the safety valve varies materially with the make and design. Care must be taken to ensure proper selection. An approved safety valve is usually of the “huddling chamber” design. In this valve, the static pressure acting on the disc area causes initial opening.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
