Affordable Access

Publisher Website

Pressure Relief Valves-5

Authors
Publisher
Elsevier Inc.
Identifiers
DOI: 10.1016/b978-075067717-2/50005-5
Disciplines
  • Design

Abstract

Publisher Summary This chapter focuses on pressure relief valves, their types, and main functionalities. Pressure relief valves are designed to protect a pressure system against excessive normal or subnormal pressure in the event of positive or negative excursion of the system pressure. They are required to open at a predetermined system pressure, to discharge or let enter a specified amount of fluid so as to prevent the system pressure from exceeding a specified normal or subnormal pressure limit, and to reclose after the normal system pressure has been restored. The most commonly used pressure relief valve type is the direct-loaded pressure relief valve in which the fluid pressure acting on the valve disc in the opening direction is opposed by a direct mechanical-loading device such as a weight or spring. The second type of pressure relief valve is the pilot-operated pressure relief valve that consists of a main valve and a pilot. The main valve is the actual pressure-relieving device while the pilot positions the disc of the main valve disc in response to the system pressure.

There are no comments yet on this publication. Be the first to share your thoughts.