A valve assembly is disclosed that includes a first and a second valve assembly parts that collectively define a duct. The valve assembly also includes a valve unit that includes a housing defining a fluid flow path therethrough. The valve unit is coupled to the first valve assembly part such that the fluid flow path is in fluid communication with the duct. A control valve is also included for controlling flow of fluid in the flow path. Furthermore, the valve assembly includes a sealing member that seals a space between the first valve assembly part and the second valve assembly part, that seals a space between the first valve assembly part and the valve unit, and that dampens vibration transmitted to the valve unit.