valve-seat bore

APR-N testing valve is the main valve of full bore pressure controlling tools in Harlliborton's company.

阀是哈里伯顿公司全通径压控式测试工具的主阀.

The stem has a slightly smaller diameter than the valve bore.

阀杆的直径略小于阀体孔的直径.

Component parts with bore such as pin valve, internal thread, oil pipe take up a large proportion in the oil industry, chemical industry and modern manufacturing industry.

孔类零件如针阀体、内螺纹、油管等在石油、化工和现代制造业中占有相当大的比重。

To change the limit of LPR test valve which need annulus pressure to keep static in opening period, a new model pressure controlled full bore testing valve which is applied for our oilfields' features is developed.

为改变目前LPR压控测试阀在开、关井过程中需要保压的局限性，研发了一种适应我国油田特点的新型全通径压控测试阀。

Remove the retainer from the body bore. The check valve modules can now be removed from the valve by hand or with a screwdriver.

从阀体镗孔上拆卸保持器。现在可以用手或螺丝刀从阀体上拆卸止回阀模块。