Poppet switch valve device and method for manufacturing poppet switch valve device

A poppet switch valve device, comprising:

• a tubular valve body, through which a through hole extends in an axial direction of the valve body, the valve body including a first valve seat and a second valve seat facing opposite sides in the axial direction of the valve body;
• a first valve rod including a first valve member configured to contact and separate from the first valve seat;
• a second valve rod including a second valve member configured to contact and separate from the second valve seat;
• and
• a solenoid including a coil and a plunger configured to be moved by excitation of the coil, wherein
• the first valve rod and the second valve rod are coaxially coupled to each other and configured to integrally move within the through hole in the axial direction of the valve body in accordance with movement of the plunger,
• the poppet switch valve device is configured to switch a flow passage when the first valve member contacts and separates from the first valve seat and the second valve member contacts and separates from the second valve seat,
• the first valve rod includes an insertion hole extending through in an axial direction of the first valve rod,
• the second valve rod includes an insertion portion inserted into the insertion hole,
• the insertion portion includes an outer circumferential surface including an external thread,
• the insertion hole includes an internally-threaded hole engaged with the external thread,
• the first valve rod includes an engagement portion configured to engage with a jig,
• when the jig engages with the engagement portion and rotates the first valve rod so that the internally-threaded hole moves forward and backward relative to the external thread, the first valve rod is moved relative to the second valve rod in the axial direction,
• the poppet switch valve device further comprises a restriction portion, and
• the restriction portion is configured to restrict movement of the first valve rod relative to the second valve rod in the axial direction after the first valve rod is moved relative to the second valve rod in the axial direction using the jig.