Throttling valve

A valve apparatus is provided with a case 11 receiving a valve 12, and a body 2 forming fluid passages 24, 25, 26, and 27, as independent constituting elements, the case 11 is received in a case receiving portion 23 of the body 2, and a ceiling portion 11a of the case 11 is fixed to a case mounting surface 23a of the case receiving portion 23 by fastening devices 5, 6, 7, and 8, whereby the case 11 and the body 2 are integrally structured.