Assertion: valve's position | /r/CapableOf | provide accurate seal
Facets:
value: with the seat
type: OTHER
Source sentences:
text: In the illustrated structure, the re- .cesscs 29 are in a line substantially parallel with the flow through the housing, and the axis of the pin 36 is at right angles to the key way 28, and the recesses 29 are accurately positioned relative to the seat face 12 whereby swinging movement of the valve member to closed position provides an accurate seal with the seat.