Valve device

A manufacturing method of a valve device that includes:

• a valve housing that includes:
• a plurality of flow passages, through which fluid is flowable;
• a communication space, through which the plurality of flow passages is communicated relative to each other;
• and
• a valve-housing-side seal portion that is placed around an opening, which communicates between one of the plurality of flow passages and the communication space;
• a valve member that is shaped into a tubular form or a spherical form and is rotatable relative to the valve housing, wherein the valve member includes a valve-member-side seal portion that blocks communication between the one of the plurality of flow passages and the communication space when the valve-member-side seal portion contacts the valve-housing-side seal portion;
• a limiter portion that is formed separately from the valve-housing-side seal portion and is immovable relative to the valve housing;
• and
• a contact portion that is formed separately from the valve-member-side seal portion and is rotatable synchronously with rotation of the valve member relative to the valve housing, wherein the contact portion is configured to limit rotation of the valve member relative to the valve housing when the contact portion contacts the limiter portion, the manufacturing method comprising:
• a positioning step of determining a position of the valve-housing-side seal portion relative to the valve member by using a positioning jig that is fittable to both of the valve member and the valve-housing-side seal portion.

A manufacturing method of a valve device that includes:

• a valve housing that includes:
• a plurality of flow passages, through which fluid is flowable;
• a communication space, through which the plurality of flow passages is communicated relative to each other;
• and
• a valve-housing-side seal portion that is placed around an opening, which communicates between one of the plurality of flow passages and the communication space;
• a valve member that is shaped into a tubular form or a spherical form and is rotatable relative to the valve housing, wherein the valve member includes a valve-member-side seal portion that blocks communication between the one of the plurality of flow passages and the communication space when the valve-member-side seal portion contacts the valve-housing-side seal portion;
• a limiter portion that is formed separately from the valve-housing-side seal portion and is immovable relative to the valve housing;
• and
• a contact portion that is formed separately from the valve-member-side seal portion and is rotatable synchronously with rotation of the valve member relative to the valve housing, wherein the contact portion is configured to limit rotation of the valve member relative to the valve housing when the contact portion contacts the limiter portion, the manufacturing method comprising:
• a positioning step of determining a position of the valve-housing-side seal portion relative to the valve member by urging a valve-member-side step surface of the valve-member-side seal portion and a valve-housing-side step surface of the valve housing against with each other.