check valve

常见例句

Series 719 Double Check Valve Assembly shall be installed at each noted location.
系列719双止回阀总成应该安装在每个标注的位置上。
Chapter 4 non-return valve , check valve can be divided into its system, check valve design and valve types.
第4章为止回阀，主要分为止回阀及其系统、止回阀设计和止回阀类型等。
A check valve should be installed on return piping if there will be a pressurized return line or the trap drains to an overhead return line (Fig. B).
如果存在一个压力回路，或者疏水阀排放口位于回路管道的上方，则应该安装一个止回阀（图B）。