DN25__DN32__DN40__DN50__DN65 - DN15__DN20__DN25...DN50

The Clorius pressure-balanced G1FB 2-way control valve is designed for regulating hot water, steam and hot oil systems. Balanced valves are used in installations where the system pressure necessitates a closing force greater than available in the actuator programme for a standard single-seated valve, and where the leakage rate for a double-seated valve is unacceptable. The G1FB 2-way control valve is used in conjunction with Clorius temperature- or pressure differential regulators for controlling industrial processes, district or central heating plants or marine installations. DESIGN The valve components – spindle, seat, cone and bellow – are made of stainless steel. The bellows for balancing the pressure are fitted on the valve spindle, which reduces the force necessary for closing the valve, as the upstream pressure of the medium through the hollow valve spindle acts outside and the pressure after the valve acts inside the bellow system. The valve body is made of nodular cast iron EN-GJS-400-15 with flanges drilled according to EN 1092-2. The thread for the actuator connection is G1B ISO 228. The valves are single-seated. The leakage rate is less than 0.05% of the full flow (according to VDI/VDE 2174). FUNCTION Without an actuator being connected, the valve is held in an open position using a spring and the bellow system. With pressure on the spindle, the valve will close. In connection with our thermostats, pneumatic or electric actuators, the valves will close at rising temperatures. For cooling circuits, the valve can be used in conjunction with a reverse acting electric actuator. Alternatively, a reverse acting double-seated valve can be used with our self-acting thermostats. The quadratic characteristic will not cease until the flow has dropped below 4% of the full flow.

The Clorius L3S 3-way control valve is designed for regulating freshwater, cold and hot seawater and lubricating liquids. The compact L3S valve is used in conjunction with temperature regulators in control systems for cooling and heating of domestic premises, district heating, industrial processes or marine installations. The valve components – valve body, seats and cone – are made of sea-water resistant gun metal RG 5. The valves are single seated. The leakage rate is less than 0.5% of the full flow (according to VDI/VDE 2174). Note: The design of the sizes DN 15 (½Ë) and DN 20 (¾Ë) is different from the bigger ones. Without an actuator being connected, connection 2-1 is fully open and connection 3-1 completely closed by means of a spring. On increasing pressure on the spindle, the opening of the ports changes proportionally to the travel of the spindle, and when the spindle is pressed to the bottom, connection 3-1 is fully open and connection 2-1 completely closed.