Assertion: valve | /r/HasAspect | effective surface
Facets:
Source sentences:
text: If the rod 37 is now shifted rightwardly until valve 28 is closed, the valve 32 will have an effective surface exposed to rightwardly acting pressure and the opposite side of said valve member, namely, the opposite side of the hub constituting said valve, is protected from the application of pressure thereagainst in a leftward direction by the presence of the rod 43.