Patent ID: 6916011

Claim:
A ball valve comprising: a body formed of a predetermined length of pipe so as to have opposite end portions, said body having a centrally-located seat portion, a stem-inserting hole formed in said seat portion, and inner seal retaining parts formed at said stem-inserting hole; a stem inserted in said stem-inserting portion; a ball connected to a lower end of said stem so as to rotate with rotation of said stem; and a pair of annular insert members set at internal peripheries of respective opposite end portions of said body; wherein said body has an outer seal retaining part formed at each of said opposite end portions of said body by compressing or diametrically contracting said opposite end portions, each of said insert members being held between one of said outer seal retaining parts and a corresponding one of said inner seal retaining parts so that said pair of insert members rotatably support said ball.