Heavy-duty automatic filling valve 3/4’’-1/2’’ from BRASS FORM, factory-made in Greece. It features pressure pre-adjustment with a scale from 0.0 to 5.5 bar, maximum inlet pressure of 16 bar, and maximum flow rate for quick circuit filling. The operating sensitivity reaches 0.15 bar, while the operating temperature ranges from 5 to 80 °C. It incorporates a filter with a 0.3 mm stainless steel mesh, an anti-corrosion ring protecting against scale, and a brass check valve with primary TEFLON. The connection offers a choice of 1/2’’ or 3/4’’. It is produced and tested according to the EN13959 standard to prevent heating water backflow into the water supply network. A pressure gauge is included in the package.