配注器装有孔口阀和单向阀系统，使泵入的流体沿环空向下或沿注入管线向下进入生产导管。
The injection mandrel is equipped with a port - and check-valve system to direct fluid pumped down the annulus or injection line into the production conduit.
本实用新型由吸罐、导管、抽气装置、调节阀组成。
The adjustable suction pot comprises a suction pot, a guide tube, an air extracting device and an adjusting valve.
水力控制阀由一个主阀及其附设的导管﹑导阀﹑针阀﹑球阀和压力表等组成。
Hydraulic control valve consists of a main valve and attached to the catheter, guided valves, needle valves, ball valves and pressure gauges and other components.
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