您要查找的是不是：
- Gravity ball check valves are converted to vent valves by replacing the standard ball with a floater ball and inverting the valve at installation - with seat up. 重力球形止回阀可以变为通风阀,只需用漂浮球体更换标准球体,然后在安装时将阀门倒置,使其阀座向上即可。
- Gravity ball check valves are converted to vent valves by replacing the standard ball with a floater ball and inverting the valve at installation?with seat up. 重力球形止回阀可以变为通风阀，只需用漂浮球体更换标准球体，然后在安装时将阀门倒置，使其阀座向上即可。
- Full Cartridge Replacement Kits are available for all True Union style ball valves and ball check valves. 对于所有真活接类型球阀和球体止回阀，可提供完整的更换筒组件。
- Ball Check valves MUST be installed with the valves FLOW arrow pointing in the direction of flow. 安装球体止回阀时必须使阀体上的流向箭头指向流体流向。
- General Installation Information: Ball check valves may be installed in either horizontal or vertical position. 一般的安装知识：球体止回阀可以安装在水平或垂直位置。
- Gravity ball check valves are converted to foot valves by replacing the union nut and end connector on the receiving end ? seat end ? of the body with an F.V. screen housing assembly. 重力球形止回阀可以变为底阀，只需在接受端口-阀体的阀座端口，用一个F.;V
- Preliminary Research of Piezo-pump Using Ball Check Valves 球阀式压电薄膜泵的初步研究
- Check valve guiding shall be plastic to plastic. 止回阀引导装置应该是塑料对塑料。
- Remove check valve and valve seal from booster. 从倍力器上卸去逆止阀和阀门密封。
- Connect vacuum hose to booster check valve. 连接真空软管到增压器检测阀。
- To test for tightness of second check Valve. 检测第二止回阀的密封性。
- ANSI FLANGED SWING CHECK VALVE CLAS. 美标法兰止回阀。
- dual ball check valve 双球止逆阀
- Reassemble the Check valve modules. 重新组装止回阀模块。
- Connect vacuum hose to booster check valve . 连接真空软管到增压器检测阀。
- Purpose: To test check valve No. 1 for tightness. 目的:检测止回阀1号的密封性。
- Sticky outlet check valve poppet. 1检查过滤的进水管线。
- CAUTION: The check valve spring is in compression. 警告：止回阀弹簧处于压缩状态。
- ball check valve 钢球单向阀,球形止回阀
- Gravity ball check may be converted for air or gas venting by replacement of standard ball with floater PP ball. 通过用漂浮的PP球更换标准球，重力球形止回阀可以改造为适用于空气或气体排气口。
