Assertion: valve's hole | /r/ObjectUse | used for sampling
Facets:
Source sentences:
text: At the same time, the secondary flow hole 71 communicates with the secondary passage hole 82, whereby the sampling fluid conduit is disposed at an open state, so that the fluid contained in the pipe is introduced to outside of the ball valve, so that the fluid contained the pipe can flow outward through the secondary through hole 91 of the second side cover 9 to be used for sampling or to be connected to other inspection pipe, thereby achieving the sampling and inspecting effects.