Patent ID: 7234682
Filing Date: 2007-06-26
Classification: F16K,Y10T

Abstract:
1. A ball valve comprising: a body formed of a predetermined length of pipe having opposite diametrically-contracted and flared end portions, said body having: a stem inserted in said stem-inserting portion, said stem having a flange with a notched groove arranged to engage said stopper piece so as to regulate rotation of said stem; 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 inserted into said body at respective opposite end portions of said body, each of said insert members having an outer pipe-connecting portion with a female thread formed therein, and each of said insert memebers having a wall thinkness larger than a wall thickness of said body; wherein a face of each of said opposite end portions of said body is compressed so that said insert members rotatably support said ball.