The success of developing this check valve is the results of assimilating foreign technique,a bold improvement and innovation.It takes a very large effect for safe operation and protecting mai...

• 该阀门的研制成功，是对国外技术的消化吸收和大胆改进与创新的结果，它对炼油系统催化装置的安全开车、保护主风机起到很大的作用，也为我国石油化工专用阀门提供了新品种。