DRAIN VALVE

摘要

PURPOSE: A drain valve is provided to improve draining efficiency correspondently to the variable pressure of fluid since the opening time of a valve body is controlled by the adjustment of the tension of a spring. CONSTITUTION: A drain valve comprises a spring(90), a spring pressing body, a tension adjusting screw(110), and a fixing nut(120). The spring is extended from one side of a piston(80) to a spring cover. The spring applies tension on the piston. The spring pressing body is formed between one side of the spring and the spring cover. The spring pressing body applies one side of the spring and adjusts the tension of the spring. One side of the tension adjusting screw is embedded in the spring pressing body through the spring cover. The tension adjusting screw moves the spring pressing body forward and backward to control the pressing degree of the spring. The fixing nut is formed on the upper portion of the spring cover and is coupled with the tension adjusting screw.