Abstract: A flow passage switching valve includes a U-turn valve member that has a first valve component and a second valve component in a quadrangular cylindrical shape. The first valve component includes a first U-turn passage formed in an end surface facing a first valve seat and an annular wall portion which is formed in an end surface near a second valve seat and in which an end portion of the second valve component near the first valve seat is fitted. The end surface of the first valve component and an inner circumferential surface of the second valve component form a second U-turn passage.

Abstract: A solenoid valve is provided with a valve main body having a valve chamber communicating with an inlet port and a first outlet port, a valve body arranged within the valve chamber, a valve holder retaining the valve body, a coil spring energizing the valve holder, a pipe member having a second outlet port communicating with the valve chamber, a suction element surrounding the pipe member, a coil bobbin winding an electromagnetic coil, and a mold cover surrounding a whole of the coil bobbin, integrated with the valve main body, and defining the valve chamber. The valve holder has a tube body facing to the suction element, and a small tube portion formed smaller in diameter than the tube body, pierced a fluid insertion hole in an intermediate portion, and having a retention portion retaining the valve body in an inner side of a leading end.

Abstract: A solenoid valve is provided with a valve main body having a valve chamber communicating with an inlet port and a first outlet port, a valve body arranged within the valve chamber, a valve holder retaining the valve body, a coil spring energizing the valve holder, a pipe member having a second outlet port communicating with the valve chamber, a suction element surrounding the pipe member, a coil bobbin winding an electromagnetic coil, and a mold cover surrounding a whole of the coil bobbin, integrated with the valve main body, and defining the valve chamber. The valve holder has a tube body facing to the suction element, and a small tube portion formed smaller in diameter than the tube body, pierced a fluid insertion hole in an intermediate portion, and having a retention portion retaining the valve body in an inner side of a leading end.

Abstract: A solenoid operated valve 10′ comprises a coil 21, a suction element 24, a plunger 31, a spring 25, a valve member 26, a bobbin 22, a housing 27 and a cap 28, wherein the plunger 31 is moved toward the suction element 24 when electricity is supplied to the coil 21. A pipe sleeve 30 is formed as a deep-drawn integrated pipe with a bottom, which is inserted to the inner side of the bobbin 22, and to which the suction element 24 is inserted and fixed. The plunger 31 is slidably inserted to the pipe sleeve 30. The valve member fixed to the end of plunger 31 opens or closes a valve opening 32. A cylindrical filter is fit to the outer peripheral of a flow-in opening 33, and assembled to a corresponding member.