UNION BALL VALVE FOR PROTECTING FREEZE AND BURST, CAPABLE OF PREVENTING FREEZING IN A WINTER SEASON BY DISCHARGING WATER TO THE OUTSIDE OF A VALVE

摘要

PURPOSE: A union ball valve for protecting freeze and burst is provided to smoothly open and close a ball valve according as a valve seat adjusts binding force with a ball by elasticity of an O-ring.;CONSTITUTION: A union ball valve for protecting freeze and burst comprises a water discharge valve. When a ball(2) is converted into a locking direction, the water discharge valve is located in a valve body(1) at a position where a discharge hole of the ball is located. The ball is mounted on the valve body. The ball elastically supports O-rings(21,32,35) and valve seats(22,33) in the valve body. Auxiliary pipe bodies are formed in both sides of which the ball is mounted. Each auxiliary pipe body comprises a male screw in the outer surface and a stepped protrusion inside.;COPYRIGHT KIPO 2012