Along with the introduction of many foreign-made power units and development of home-made heavy units, 1700 Series relief valves, which are designed and fabricated by the Dresser Company, USA, are widely used in Chi-na. 随着从国外引进发电机组的增多和国产大容量机组的发展。由美国公司设计制造的1700系列安全阀在我国使用的范围也越来越广泛。