Assertion: snorkel's valve | /r/AtLocation | the top of the extending pipe
Facets:
Source sentences:
text: Because the English valve is located at the top of the extending pipe near the top of the well cap, and because the flood water level has to reach a relatively high level prior to raising the ball from its lowest rest position, when the ball actually closes the valve, the water level is relatively high in the lateral pipe extension and can splash up so that a small amount of the water passes through the check valve and into the conduit and down to the well therebelow prior to closing the valve.