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1·By adopting some technology of advanced detection, adding temporary invert, sleeve valve pipe and lock foot bolts, the construction of the tunnel is completed safely and successfully.

暗挖区间隧道通过采用超前探测、增设临时仰拱、袖阀管、锁脚锚管等技术措施，安全、顺利完成了北四环路和北辰桥段的施工。

2·For ease of installation, insert all flange bolts through the valve flange and then through the sleeve flange, but do not let the bolts extend beyond the surface of the flange rubber (See Figure 4).

为了使安装容易些，可以将所有法兰螺栓穿过阀门法兰，然后穿过套管法兰，但是不要让螺栓超过法兰橡胶表面(参阅图4)。

3·Other than its excellent abrasion resistance, the Type A Valve can easily be cleaned if the lime solidifies, by actuating the sleeve.

除了优异的抗研磨特性以外，如果石灰固化，A型夹管阀还能够通过驱动套管将固化石灰轻易清除。

4·The flexing action of the sleeve breaks up any sediment or build-up in the valve, which makes the Type a a reliable low-maintenance valve.

套管的弹性运动可以碎裂淤积在阀门内的任何沉淀物，这使得A型夹管阀成为一款可靠的低维护的阀门。

5·The Red Valve Hawse pipe valve features a flexible reinforced elastomer sleeve that seals tightly around the anchor chain or cable.

美国红阀公司的锚链管道阀门配置弹性强化人造橡胶套管，能够实现对锚链或缆索的环绕紧密密封。

6·These parts are vulcanized under pressure to form a pressure-containing sleeve that is the heart of a Pinch Valve.

这些部件是在压力下硫化并形成压力套管，这是夹管阀的心脏部分。

7·The flexing action of the sleeve not only unplugs the valve, but also breaks up the lime.

套管的弹性作用不仅不会堵塞阀门，还能够碎裂固化的石灰。

8·Adding air pressure within the annular space between the housing and sleeve can throttle, or close the valve.

在阀体外壳和套管之间的环形空间内施加气压，即可实现阀门的节流和关闭功能。

9·The pure gum rubber sleeve of the Type A Valve offers excellent abrasion resistance, and since the Type A uses only air pressure to operate, there are no moving parts to break or wear out.

型夹管阀采用的纯树脂橡胶具有优异的抗磨损能力，因为A型夹管阀只是采用气压进行操作，因此没有活动部件会断裂或磨损。

10·The exported relief valve with submerged perforated sleeve designed and manufactured by a Japanese company is used in the connecting section of YRDP for the first time in China.

由引黄连接段工程引进的日本粟本铁工所设计、制造的淹没式多孔套筒阀，在国内为首次使用。