用途：

1、适用于动力锅炉、裂解炉、直流锅炉、再热器及其它设备管道作超压保护。
2、性能符合ASME《锅炉和压力容器规范》第1卷动力锅炉要求。
特点：

1、采用背压套来调节回座压力，以达到极小的启闭压差。
2、高性能高温材料作弹性阀瓣材料，以保证高温下的密封性。
3、密封存付表面堆焊钴基硬质合金，以防护高温蒸汽的气蚀。
4、一定的热态测试，使安全阀更接近工况条件。
Application:
WFSH is served for the overpressure protection of power boilers, decomposition boilers, once-through boilers, reheaters and other pressure vessels and pipes. Performance: WFSH meets the requirements of ASME Boiler and Pressure Vessel Code, Section One - Power Boilers.
Features:
1) Adjusting back seat pressure with back pressure jacket, to arrive minimum blowdown
2) High performance and temperature material are used for the valve to ensure its tightness in high temperature
3) Tightness body is faced with Stellite, to prevent from eroding of high temperature gas
4) Tested under hot position and make the safety valve approach to service condition