Sitec Aerospace actuators and valves cover a wide variety of applications in fixed and rotary wing aircraft for the civil and military market. For Oxygen Systems, valves have been created to meet the special demands of a grease-free environment. A Humidification System Valve has been designed and supplied by Sitec Aerospace. This valve is assembled on a system which humidifies the air in the passenger cabin. For applications in connection with fuel, fast reacting ball valves with a thermal relief feature have been designed and used on various aircraft programmes. Actuators supplied by Sitec Aerospace control temperature, oxygen and air, fuel and water flow.