A thermostatted valve used in an internal combustion engine and comprising a housing fitted with at least three ports, namely an engine port to communicate with the engine cooling system, a radiator port to communicate with the radiator, and a bypass port to communicate with a bypass, further comprising a hollow, spherical valve element supported pivotably about a pivot axis within the housing between two end positions, said valve element being fitted with at least two apertures of which one permanently communicates with the engine port and the other is situated in a plane substantially perpendicular to said pivot axis, further comprising a temperature sensor controlled valve element drive, characterized in that the axes of all ports are configured in planes that are approximately perpendicular to the pivot axis of the valve element, in that the valve element is approximately a spherical segment or a laminar sphere of which the open side communicates permanently with the engine port, further that the valve element is fitted with at least one feedthrough which in one of the end positions of said valve element is disconnected from the radiator port while in the other end position it faces this radiator port, in that an approximately spherical sealing system is configured in the zone of the radiator port and in that said drive acts on the valve element) excentrically relative to the pivot axis.