Assertion: valve's stem | /r/AtLocation | the specification
Facets:
Source sentences:
text: As will be described later in the specification, the upper valve stem 54 is rotatably supported in the bonnet member 14, but is restrained against axial movement with respect thereto, and consequently, when the upper valve stem 52 is rotated in one direction or the other, it will correspondingly cause the gate valve member 32 to reciprocate upwardly or downwardly, as the case may be.