HG 3157-2005 in English

本标准规定了液化气体罐车上的弹簧安全阀的结构设计、性能、材料、制造、试验与检验、标志和供货等要求
本标准适用于液化气体罐车上的安全阀。其公称压力为1.0MPa及2.5MPa，公称通径为25mm--150mm工作温度不大于50℃适用介质为液氨、液氯、液态二氧化硫、丙烯、丙烷、丁烷、丁二烯及其混合物等。
本标准也适用于液化气体储罐上的安全阀

Scope

This standard specifies the structural design, performance, materials, manufacturing, testing and inspection, marking and supply requirements for spring safety valves (hereinafter referred to as safety valves) on liquefied gas tank trucks. This standard applies to safety valves on liquefied gas tankers. Its nominal pressure is 1.0MPa and 2.5MPa, its nominal diameter is 25mm~150mm, and its working temperature is not greater than 50°C. Applicable media are liquid ammonia, liquid chlorine, liquid sulfur dioxide, propylene, propane, butadiene, butadiene and their mixtures, etc. This standard also applies to safety valves on liquefied gas storage tanks.