VALVE

There is provided a valve capable of reducing valve leakage. A valve includes: a valve housing 10 in which ports 11 and 12 through which a fluid passes are formed; a valve body 51 to be driven by a drive source 80; a valve seat 40a on which a contact portion 51a of the valve body 51 is seated; and biasing members 16 and 17 for biasing the valve body 51 in a valve closing direction. The valve seat 40a is formed of an elastic member 40.