Microvalve device having a check valve

Abstract

A microvalve device for controlling fluid flow in a fluid circuit. The microvalve device includes a body defining a chamber, an inlet port and an outlet port. The inlet port is connected in fluid communication with the chamber and is adapted for connection with a first fluid source. The outlet port is connected in fluid communication with the chamber and is adapted for connection with a second fluid source. A check valve is movably disposed in the chamber for movement between a closed position and a fully opened position by differential pressure across the check valve. When the check valve is placed in the fully opened position, fluid is allowed to flow from the inlet port to the outlet port through the chamber. When placed in the closed position, the check valve restricts fluid from flowing between the inlet and outlet ports.

Dependencies are inferred from the claim text.