The role of the check valve to prevent water backflow, with the film door, also do not need a check valve. 逆止阀的作用是防止水倒流,有了拍门后,也就不需要逆止阀了。
When the pumps are shut down for maintenance or fresh-water flushing, massive amount of water can backflow through the pipes, damaging the pumps. 当泵关闭进行维护保养或用淡水进行冲洗时,大量的水就可能通过管道回流,从而损坏泵。
Designed to retrofit backflow protection onto fire hydrants used for temporary water service. 适用于用在临时性水应用的消防栓上的防回流阀的更新改造。
Imports, also known as one-way valve or check valve check valve is automatically prevent fluid backflow valve. 进口止回阀又称单向阀或逆止阀,是能自动阻止流体倒流的阀门。
Backflow preventer manufactured from 300 Series stainless steel for corrosion resistance. 防回流阀采用耐腐蚀的300系列不锈钢制造。
Certified testers of backflow assemblies must conduct this test. 这种测试必须由有资格证书的防回流阀总成检验员进行。
After comparing with standard backflow method and t inspection, we found these two methods had not significant difference. 并以标准回流法与之进行对比实验,经一致性t检验,两种方法并无显著性差异。
A strainer should be installed as shown, ahead of backflow preventer to prevent disc from unnecessary fouling. 应该如图安装过滤器,其位置位于防回流阀之前,以防止阀瓣不会受到不必要的污染。
Single well backflow tracer test There is reflux of barium into the terminal ileum. 单井示踪剂回流试验钡剂反流进入回肠末端。
To prevent this from happening, the house's external tap should be fitted with a backflow prevention device. 防止这发生,房子的外部应该符合回流预防设备。
The shutoff valve with the test cock is to be mounted on the inlet side of the backflow preventer. 带测试旋塞的关闭阀安装在防回流阀的进口一侧。
If debris in the water system continues to cause fouling, a strainer can be installed upstream of the backflow assembly. 如果水系统内的堆积物继续产生污垢,则在回流阀总成的上游要安装一个过滤器。
To avoid this discharge, install a spring-loaded, rubber seated check valve ahead of the backflow assembly. 为了避免这种排放,要在防回流阀总成前面安装一个弹簧驱动、橡胶阀座的止回阀。
Headstock piece on media flows and forces open or closed to prevent backflow valve media called a non-return valve. 启闭件靠介质流动和力量自行开启或关闭,以防止介质倒流的调节阀叫止回阀。
Another problem can occur rarely if backflow of process gas is permitted into the secondary air feed line. 如果工艺气体回流入二段空气管线,能发生另外的很少发生的问题。
A Reduced Pressure Zone Assembly shall be installed at each potential health hazard location to prevent backflow due to backsiphonage and/ or backpressure. 在每个潜在健康危害的地方应该安装减压区总成,以防止由于反虹吸和/反压力造成的回流。
NOTE: For Australia and New Zealand: Pipeline strainers should be installed between the upstream shutoff valve and the inlet of the backflow preventer. 注意:适用于澳大利亚和新西兰:管路过滤器应该安装在上游关闭阀和防回流阀进口之间。
This occurs because venturi meters cannot detect backflow. 因文丘里流量计无法检测回流,此情况发生。
After shutoff valves are closed, open test cock# 2,# 3 and# 4 to relieve pressure within the backflow assembly. 在关闭了关闭阀后,开启测试旋塞2号,3号和4号,释放回流阀总成的压力。
The system should be flushed before the backflow valve is installed. 在安装回流阀之前系统应该进行冲刷。
A strainer should be installed ahead of the backflow preventer to protect all internal components from unnecessary fouling. 在防回流阀前应该安装一个过滤器,以保护所有内部部件不会受到不必要的污染。
A check valve may be required ahead of the backflow preventer. 此时在防回流阀前面可能需要安装一个止回阀。
Installing a backflow preventer in a pit or vault is not recommended. 不建议在坑内或拱顶内安装防回流阀。
In-line flow restrictor protects the meter measuring element and the backflow preventer components from damage due to excessive flow. 管内流量限制器保护仪表测量元件和防回流阀部件不会因为过大的流量而受到损坏。
When cleaning, the valve of the pipeline controls the backflow of the liquid with convenience. 清洗时由管路阀门控制液体倒流,十分方便。
Since then we installed a backflow valve so it was less this time. 自从那时起,我们安装了一个逆流阀,所以这次少了很多。
Use check valves or traps to prevent backflow of water or other contaminants if backflow can occur into the cylinder. 如果有可能发生回流入钢瓶,使用止回阀或陷阱来防止水或其它污染物回流。
The utility model can avoid the secondary pollution which is caused because of backflow of water. 并且可防止因水的回流而引起二次污染。