Direct spring loaded safety valve 弹簧式安全阀 ; 弹簧式平安阀 ; 弹簧式 ; 弹簧安全阀式安全阀

sealed spring loaded safety valve 封闭式弹簧安全阀

spring-loaded safety valve 弹簧式安全阀 ; 弹簧安全阀

low lift spring-loaded safety valve 微启式弹簧安全阀

full lift spring-loaded safety valve 全启式弹簧安全阀

spring-loaded type safety valve 弹簧式安全阀

spring safety valvespring-loaded relief valve 弹簧安全阀