标准摘要
"This standard is a purchase specification for flanged steel pressure-relief valves. Basic requirements are given for direct spring-loaded pressure-relief valves and pilot-operated pressure-relief valves as follows: -orifice designation and area; -valve size and pressure rating, inlet and outlet; -materials; -pressure-temperature limits; -center-to-face dimensions, inlet and outlet. Nameplate nomenclature and requirements for stamping are detailed in Annex A."
英文名称Flanged Steel Pressure-relief Valves