装有气体止回器，保证设备工期安全可靠。
Fit backstop to ensured safe and reliable gas distribution to each toreh.
安装在阀门内的止回模块其阀座应该面对阀门进口。
Check modules are installed in the valve body with the seats facing the valve inlet.
该阀门有四个功能：流量测量、止回、再循环控制和多级降压。
The valve has the four functions of flow measure, flow checking, recirculating control and multistage pressure reducing.
本发明中的止回装置既可采用单向棘 爪棘齿式离合装置，也可以采用单向滚柱超越离合器。
The block device in the invention can adopt one-way pawl-ratchet type on-off devices and one-way roller overrunning clutches.
文中分析认为较经济而可行的方法是在支流下游设立止回闸，防止河水倒流从而保护支流水体。
A suggest is put forward after investigation and analysis that a return flow prevention gate be built for the benefits of economy and environment.
倒流的流体通过倒流的流体压力将止回关闭装置与阀体紧密密封，从而实现阻止倒流的“止回”功能。
Reversed flow is stopped or held in "check" by fluid backflow pressure which seats the closure device against the valve body.
整个阀门无法在线检测，但是，每个止回模块部件编号SA7B 16可以按照下列方法单独进行检测。
Complete valve cannot be tested in the line, however, each check module Part no. SA7B16 can be tested individually as follows.
其由于设计先进、结构合理、节省能源、并在使用中一阀兼有止回、截止、调节流量三大功能，因而深受广大用户欢迎。
For advanced design, reasonable structure, saving energy, comprehension of three functions of shutting, regulating and checking flow it is well received by customer.
两个止 回阀和安全阀的阀座和阀座阀瓣应该是可更换的，更换过程不需要特殊工具。
Seats and seat discs shall be replaceable in both check valves and the relief valve without the use of special tools.
人当自信自守，凡义所宜为，力所能为，心所欲为，而亲友挽得回，妻孥劝得止，只是无。 。
People self-confidence when sober, suitable for all righteousness, force can be, the heart to want to pull back, and relatives and friends, wife and children are persuaded to stop, but no.
上部装置——有上部机壳、上罩、卸料口(装有防回料板)、头轴装配、逆止器等部件。
Upper device — includes parts of upper casing, top cover, discharge outlet (with anti back feed plate), head shaft and backstop.
上部装置——有上部机壳、上罩、卸料口(装有防回料板)、头轴装配、逆止器等部件。
Upper device — includes parts of upper casing, top cover, discharge outlet (with anti back feed plate), head shaft and backstop.
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