General specifications The VALBIA electric actuators are suitable for the automation of ball and buttertly valves for the industrial and construction sector. The usage of electronic components of at last generation, together with precise mechanic, fruit of careful research and development, enables high performance and long-term reliability of the product. The range has been manufactured with following characteristics: - The housing of the actuators provides a V0 self-extinguisn class techno-polymer mateial. - The kinematics is made by two steal and techno-polymer gear wheels, sustained by hardened steel pinions, mounted on self-lubricating bushes (excluding mod. VB015), and inserted in a strong structure of die-cast aluminium. - The connection part ot the actuators with the valves, is made by a die-casted and painted alurninium plate cataphoresis, with a dual drilling interface as per the lSO5211 - DIN 3337 Standard. - The electronic circuit adjusts automatically the motor speed depending on the mechanical charge variations in order to drive the cycle always in the same time. - All actuators are provided with an electronic system for torque limiter. - The whole actuator ranger is standard provided of Heater actives with the powered actuator. - Whole range of actuators (except for VB015 and for 12V power supply) are modulable: standard setting is 4-20 mA or 0-10V. Reverse option 20-4 mA or 10-0 V is programmable (except for 12 V power supply). - All electric actuators (except for VB015) can be equipped with linear potentiometer rating 5KO. - All electric actuators (except for VB015 and for 12V power supply) can be equipped with battery for emergency control.