shutoff

It shall be a complete assembly including tight-closing resilient seated shutoff valves, test cocks, and a strainer is recommended.

这种总成应该是完整的，包括紧密关闭弹性阀座关闭阀（闸阀），测试旋塞，以及建议配置的一个过滤器。

Microbe have been applied to preparing polymer (Xanthan), MEOR, water-shutoff, processing polluted water, treating environment pollution.

微生物工程可用于制取生物聚合物、微生物提高采收率技术（MEOR）、处理污水、治理环境污染等；

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应该安装在防回流阀的进口侧。

This feature "block and bleed" may be important as its use can show whether the valves are providing liquid-tight shutoff of fluid flow.

由于管道闸阀可以观察关阀时对流体的密封性能，这种“开、关”特性是很重要的。

Many bronze valves offer a Y-pattern body with an angle seat for improved performance. Resilient seating preferred for tighter shutoff.

许多青铜阀门为了改进性能，采用角式阀座的Y形阀体。如果需要更紧密的关闭，就需要采用弹性阀座。

A shutoff gate is associated with each connecting trough and movable between an open position and a closed position.

阻断闸板与每条连接槽相关联且可在打开位置与关闭位置之间移动。

At the same time comparative experiments of its water shutoff performance also be conducted with other types of temporary plugging agent.

同时还将暂堵剂与其它类型的暂堵剂进行了堵水性能的对比实验。

Therefore, the water shutoff profile increases the workload of each year, more difficult work, and reduce the potential for increasing oil.

因此，堵水调剖的工作量逐年增大，工作难度增加，而增油潜力降低。

Application Industrial gas system applications for safety shutoff, pressure control, or differential-pressure control.

应用工业气体安全关断，压力控制或压差控制系统应用。

When extremely tight shutoff is required, globe and check valves are supplied with Neoflon, PTFE or other soft inserts.

如果需要紧密关闭，球阀截止阀和止回阀都会配置四氟乙烯、PTFE或其它软镶嵌件。

The patent pending lockout collar for the automated models allows fine adjustment to ensure tight shutoff or maximum opening.

正在申请专利的锁定轴衬用于自动型号，能够实现精确调节，确保紧密关闭或最大开启度。

This shutoff valve should be located as close to the source as possible.

这个切断阀应该尽可能接近气源。

But the performance characteristics of common cement have influence on the further improving economic benefit of oil well water shutoff.

但普通油井水泥由于其性能特点，影响了堵水经济效益的进一步提高。

Prior to servicing any Watts valve, it is mandatory to shut down the water system by closing both the inlet and outlet shutoff valves.

在维修任何美国瓦茨阀门之前，必须先通过关闭进口和出口关闭阀来实现水系统的关闭。

This will enable the stem to expand slightly without bending or damaging the valve and will not affect valve shutoff.

这将使得阀杆能够稍微扩张，不至于弯曲或损坏阀门，也不影响阀门的关闭。

Start Up: The downstream shutoff should be closed.

启动：下游关闭阀应该处于关闭状态。

Based on several years water shutoff practice, current water shutoff methods and blocking agents needs to be improved.

根据几年来的堵水实践，目前的堵水方式和堵剂还须进一步完善、提高。

Two independent check valves with intermediate relief valve . Supplied with shutoff valves and ball type test cocks .

两个独立的止回阀配置中间安全阀。配置关闭阀和球型测试旋塞。

Oil Wells after a profile modification of construction, conventional water shutoff used large plugging agent and the effect is not obvious.

油水井在进行了多次调剖堵水作业之后，常规的调剖堵水作业的堵剂使用量大而且增产效果不明显。

Union fittings and shutoff valves should be installed on both sides of trap for ease of servicing and trap testing.

在疏水阀两侧应该安装连接装置和关断阀，以简化维修和疏水阀测试。