止回阀

Series 709DCDA Double Check Detector Assemblies are designed exclusively for use in accordance with water authority containment requirements.

系列709DCDA双止回阀检测器总成专用于满足水主管部门的密封要求的应用场合。

Series 775 Double Check Valve Assemblies provide protection of the potable water supply for non-health hazard cross-connections.

系列775双止回阀总成防止交叉连接处非健康危害的流体污染饮用水供应系统。

Series 774DCDA Double Check Detector Assemblies are designed for use in accordance with water utility non-health hazard containment requirements.

系列747DCDA双止回阀总成用于符合自来水公司非健康危害密封要求的应用场合。

Series 774 Double Check Valve Assemblies are designed to prevent the reverse flow of polluted water from entering into the potable water system.

系列747双止回阀总成用于防止污水回流进入饮用水系统中。

Arrow type check valve used to be installed between drill stem and bit to prevent drilling fluid backflow from the bottom.

箭形止回阀用以安装在钻杆和钻头之间防止钻井液从井底回流。

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。

He suggests us to contact Stephan/Lacie HK to double check!

他建议我们去接触斯蒂芬·/ Lacie香港双止回阀！

Muffler of its collect fan, electric machinery, filter, imports and exports, stretch connect, relief valve, check valve, manometric at an organic whole, can configure PLC signal interface, intelligent monitoring appearance, acoustic hood.

它集风机、电机、过滤器、进出口消声器、弹性接头、安全阀、止回阀、压力计于一体，并可配置PLC信号接口，智能监控仪、隔声罩。

And the lighter in the second check module.

较重的弹簧负载模块应该在第一止回阀内

If water column falls below 28 inches, check module is fouled and should be replaced.

如果水柱降到28英寸以下，则止回阀模块受到污染并且应该被更换。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。