US Patent 11873909 Valve device

A valve device includes a case member, a valve body, a sleeve, a spring, and a spring end support part. The sleeve is slidably supported by an inner wall of a fluid inflow part of the case member and forms a flow path to guide a fluid flowing out from a valve outflow port of the valve body toward a fluid outflow port of the case member. The spring is placed so as to surround the outer periphery of the sleeve and biases the sleeve toward the valve body. The spring end support part is formed in an end part in the case member on an opposite side of the spring from the valve body and supports an end part of the spring on an opposite side to the valve body in the axial direction from the outside in the radial direction of the spring.