Abstract: A valve device includes a housing and a cylindrical valve body. The housing defines: an inflow port; a first outflow port and a second outflow port which are opened apart in a circumferential direction and respectively have first and second opening widths; and an accommodation chamber. The valve body is arranged in the accommodation chamber to open and close the first and second outflow ports and includes: an internal passage; a first outflow communication port which expands in one direction in the circumferential direction continuously with a region facing the first outflow port, and has an opening width larger than the first opening width; and a second outflow communication port which expands in the other direction in the circumferential direction continuously with a region facing the second outflow port, and has an opening width larger than the second opening width.

Abstract: A reed valve 1 includes: a valve body 4; a valve seat 6 having a valve hole 3 for passage of a fluid J; a casing 8 accommodating the valve body 4; and a reed 10 including an arm part 18 having a first end portion 22 connected to the casing 8, and a valve body support part 20 connected to a second end portion 24 of the arm part 18 and supporting the valve body 4 so that the valve hole 3 can be opened and closed. When a first direction D1 is a flow direction of the fluid J in the valve hole 3, and a first surface 21 is a surface facing downstream in the first direction D1 among an inner surface of the casing 8, the first surface 21 includes a recess 27 facing the arm part 18.

Abstract: A valve device 1 includes a rotational shaft 2, and a valve body 4 internally forming a space 10 and rotatable about the rotational shaft 2, the valve body 4 having an outer circumferential surface 28 where a first communication hole 36 and a bottomed groove 38 are formed, the first communication hole 36 communicating with the space 10, the bottomed groove 38 extending from the first communication hole 36 toward one side in a rotational direction of the rotational shaft 2, and the groove 38 including a first section 40 in which at least one of a depth D of the groove 38 and a width W of the groove 38 increases toward the first communication hole 36.

Abstract: A reed valve 1 includes: a valve body 4; a valve seat 6 having a valve hole 3 for passage of a fluid J; a casing 8 accommodating the valve body 4; and a reed 10 including an arm part 18 having a first end portion 22 connected to the casing 8, and a valve body support part 20 connected to a second end portion 24 of the arm part 18 and supporting the valve body 4 so that the valve hole 3 can be opened and closed. When a first direction D1 is a flow direction of the fluid J in the valve hole 3, and a first surface 21 is a surface facing downstream in the first direction D1 among an inner surface of the casing 8, the first surface 21 includes a recess 27 facing the arm part 18.

Abstract: The problem to be solved is to provide an angular sensor where deterioration in detection accuracy or occurrence of erroneous detection due to influence of an external magnetic field is reduced. An angular sensor 1 which detects a rotation angle of an object includes a magnet 12 which is rotated according to the object and a magnetic sensor 11 which detects the rotation angle of the magnet based on a change in magnetic field generated by from magnet, wherein a direction of an external magnetic field which is a magnetic field other than the magnetic field of the magnet and a direction of the magnetic field generated by the magnet in a rotation range where the magnet is rotated are set to have an angle of less than 90 degrees.