The utility model relates to a back-pressure gauge valve which is freeze proof and theft proof. 本实用新型涉及一种防冻、防盗回压表阀。
The back-pressure valve in the pipeline of outlet of metering pump that guarantees high vacuum degree; 在计量泵出口管道安装背压阀,能保证系统的高真空度;
The valve features novel structure, compact size and low weight. It not only solves the problems of high oil returning back-pressure and complicated machining processes of original balance valve but also increases crane productivity effectively. 该阀结构新颖、体积小、重量轻,既解决了原平衡阀回油背压高,加工工艺复杂的问题,又能有效地提高起重机的作业效率。