||G 41 ... a G 46 ...
G 41 - The valve is single-seated, lever-actuated, designed to be actuated with an electric actuator or a hydraulic cylinder. In case of manual operation, it is possible to lock the levers with an arresting pin and to actuate the valve with its hand wheel. The valve is equipped with a position indicator. The control valves for temperatures exceeding 400°C are equipped with a labyrinth packing with the drain off. The valve control plug is always designed for the parametres specified in the order and according to the requested type of flow characteristic.
G 46 - The valve is single-seated, lever-actuated, designed to be actuated with an electric actuator, possibly with an electric or a hydraulic cylinder. In case of emergency, it is possible for the valve equipped with hand wheel to lock the levers with an arresting pin and actuate the valve with its hand wheel. Its control plug is always designed according to the parameters specified in the order and according to the required type of flow characteristic.
The valves are supplied with the following actuators of the following producers: ZPA Pečky - Modact Konstant MPS, Modact Control MPS and Modact Variant MPR. The connection stem between the valve lever and the actuator is not a subject of the delivery unless it is ordered.
The valve serves as a control, reduction or by-pass element with indirect or direct actuating. The max. permissible pressures are according to EN 12 516-1. The intention to use the valve for higher temperatures must be agreed upon with the producer. The control valves proper function depends onthe sizing and execution of the control station, therefore the valve design and its specification is recommended to be carried out together with the producer.
The valves are designed to regulate the flow and pressure of liquids, possibly vapours and gases e.g. water, steam and other media compatible with material of the valve inner parts. The valve max. differential pressure is 4,0 MPa with respect to the pressure nominal and concrete conditions of operation (ratio p1/ p2, creation of cavitation, above critical flow etc.).