solenoid valve further includes annular opening and closing members slidably fitted around the respective first valve bodies of the two valve members and the synchronizing members the synchronizing members are movable synchronized with each valve member and are coupled to the annular opening and closing member of other valve member application_number US 4722987 A description the construction and operation of the present invention will be further explained by referring to an embodiment shown in the accompanying drawings the constitution of the main valve portion with the pilot solenoid valve omitted for clarity is shown in fig2 and fig3 in the main valve portion 1 there are provided a supply chamber 2 to be connected to in port p the fluid chamber 3 to be connected to out port a and the discharge chamber 8 to be connected to the discharge port r two openings 4 and 5 are provided between the supply chamber 2 and the fluid chamber 3 while two openings 9 and 10 are provided between the fluid chamber 3 and the discharge chamber 8 in the valve case 1 there are provided two sets of valve members i e the first valve member 6 having the first valve body 6a adapted to open and close the first opening 4 and the second valve stem 6b adapted to close and open the third opening and the second valve 7 having the first valve body 7a adapted to open and close the second opening.