Patent ID: 7802590

Claim:
A switch valve, comprising: a valve seat having an inside formed with a valve chamber which has a water inlet conduit and a water outlet conduit; a valve body partially mounted in the valve chamber of the valve seat and having a water inlet hole connected to the water inlet conduit of the valve seat and a water outlet hole connected to the water outlet conduit of the valve seat; a ceramic plate unit rotatably mounted in the valve body to connect the water inlet hole to the water outlet hole of the valve body or to interrupt a connection between the water inlet hole and the water outlet hole of the valve body; a control shaft rotatably mounted on the valve body and having a first end secured on the ceramic plate unit to rotate the ceramic plate unit and a second end protruded outwardly from the valve body; wherein the valve body has a first portion secured in the valve chamber of the valve seat and a second portion protruded outwardly from the valve chamber of the valve seat; the valve chamber of the valve seat has a peripheral wall formed with an inner thread; the first portion of the valve body has a first end formed with an outer thread screwed into the inner thread of the valve seat and a second end formed with the water inlet hole; the switch valve further comprises: a control handle secured on the second end of the control shaft to rotate the control shaft; a locking cap mounted on the valve body and rested on the valve seat to cover the valve body; the second portion of the valve body is formed with an outer threading; the locking cap has a first end formed with an inner threading screwed onto the outer threading of the valve body; the outer threading of the valve body is located beside and has a diameter greater than that of the outer thread of the valve body.