API 6A GATE VALVES

Valve Seat Rings

valve seat


The non-moving part of a valve. Water flow is stopped when the moveable portion of the valve comes in contact with the valve seat.


The valve seat in an internal combustion gasoline or diesel engine is the surface against which an intake or an exhaust valve rests during the portion of the engine operating cycle when that valve is closed.


Surface against which a valve contacts. Usually, a valve at rest is against the inner seat, and a valve that is actuated is against the outer seat.

rings


(ring) a characteristic sound; "it has the ring of sincerity"


A circular band of any material


gymnastic apparatus consisting of a pair of heavy metal circles (usually covered with leather) suspended by ropes; used for gymnastic exercises; "the rings require a strong upper body"


A thin band or disk of rock and ice particles around a planet


A small circular band, typically of precious metal and often set with one or more gemstones, worn on a finger as an ornament or a token of marriage, engagement, or authority


(ring) sound loudly and sonorously; "the bells rang"