TWO-STAGE BACKFLOW PREVENTION VALVE WITH EXCELLENT WATERTIGHT SEALING AND FLOW PATH EXPANSION PROPERTIES USING AN O-RING, A WATER SEALING RING, AND A RADIALLY SPLIT SUPPORT

摘要

PURPOSE: A two-stage backflow prevention valve with excellent watertight sealing and flow path expansion properties is provided to secure stable and sufficient supply of water even in a low water pressure condition.;CONSTITUTION: A two-stage backflow prevention valve with excellent watertight sealing and flow path expansion properties comprises a socket pipe, a valve body(30), a poppet(40), a poppet guider(50), and a spring(60). In the socket pipe, a fastening nut is coupled to one side and a fastening screw part is formed on the other side. Two check valves are successively inserted and fixed inside the socket pipe. The valve body is tightly inserted into the check valves. The poppet opens and closes the valve body. The poppet guider has a supporting pipe which supports the inserted moving axis of the poppet. The spring elastically supports the poppet against the poppet guider.;COPYRIGHT KIPO 2011