The Herz 3Q4AD5 is a genuine diaphragm pressure reducing valve designed for drinking water systems, featuring an integrated filter. Constructed from dezincification-resistant brass for the body and a transparent plastic filter bowl, it ensures durability and allows for easy inspection. This valve has a 1 1/2 inch (DN 40) connection, a maximum operating pressure of 16 bar, and an adjustable outlet pressure range from 1.5 to 6 bar, factory-set at 4 bar. It includes a 0.25 mm filter mesh size and a manometer connection, suitable for horizontal installation with the filter bowl downwards. The maximum operating temperature is 30°C and it has a Kvs value of 10 m³/h.