It is more effective for fishing the blocked oil pipe with the distorted fish top, especially with flexing flat full head.
用途打捞鱼顶变形，尤其对弯扁鱼头的遇卡油管更加有效。
2
The water flow velocity in the suction pipe, which is crucial for evaluating the performance on pumping fish, can be measured by the pumped water flow rate of the riser in an air lift pump system.