Patent ID: 8205639

Claim:
A valve sealant fitting comprising: a sealant body ( 10 ) having a screw groove ( 11 ) for assembling an upper cap ( 30 ) at its upper end, an insert coupling groove ( 12 ) with a sealing O-ring ( 12 a ) mounted on an inner wall of the insert coupling groove, a sealant exit port ( 13 ) with a small diameter and a sloped inlet port at a lower end of the coupling groove ( 12 ), and an exit port side ball ( 14 ) acting to close a bottom end of the exit port ( 13 ) when the internal fluid back flows and acting to open the bottom end of the exit port ( 13 ) when the sealant is injected; an insert ( 20 ) having an intermediate sealant flow path ( 21 ) for guiding the sealant to be injected toward an inner center of the insert in an inner insert coupling groove ( 12 ) of the body ( 10 ), a tapered and protruded sealed port ( 22 ) for an exit port capable of sealing the sealant exit port ( 13 ) at an upper end of the sealed port ( 22 ), outlet ports ( 21 a ) disposed at both upper ends of the sealed port ( 22 ) toward an inner wall surface of the body for stopping the sealant flow when the exit port ( 13 ) is completely blocked and allowing the sealant to immediately flow when a fine opening occurs, and a coil spring ( 23 ) interposed at an upper end of the insert; and the upper cap ( 30 ) having a sealant injection port ( 31 ) with a small diameter at an upper end of the insert ( 20 ), and an upper injection port side ball ( 32 ) disposed below the ball and allowing the cap to be elastically opened by the spring when the sealant is injected and allowing cap to be closely sealed by the spring ( 23 ) in a normal state, wherein the sealant body ( 10 ), the insert ( 20 ), and the upper cap ( 30 ) are sequentially assembled and coupled together, wherein a screw assembling portion ( 50 ) for the upper cap ( 30 ) and the insert ( 20 ) has a left-handed screw coupling structure in order that a complete metal sealing be additionally secured in a coupling portion ( 40 ) where the upper cap ( 30 ) and the insert ( 20 ) are assembled by means of screws so that the insert and the upper cap ( 30 ) are not unfastened and removed even when the upper cap ( 30 ) is unfastened by at least one pitch.