Valve sealant fitting

a Disclosed is a valve sealant fitting of high quality, which not only ensures rapid and easy injection of a sealant but also maximizes an effect of preventing a leakage. That is, the present invention provides a valve sealant fitting, which comprises, sequentially assembles and couples: a sealant body having an insert coupling groove with a sealing O-ring mounted on an inner wall of the body, a sealant exit port with a small diameter and a sloped injection port at a lower end of the body, and an exit port side ball mounted at a bottom of the exit port ; an insert having an intermediate sealant movement path for guiding the sealant to be injected toward an inner center of the insert and having a sealed port and a coil spring interposed at a lower end of the insert; and an upper end cap having a sealant injection port with a small diameter mounted on an upper end of the insert and having an injection port side ball mounted below the injection port