... corrosive gases; 3. Material: Diecasting Aluminium ( in line with standard UNI EN 1706 ), Brass ( in line with standard UNI EN 12164 ), ... Stainless steel ( in line with standard UNI EN 10088 ), NBR ( in line with standard UNI 7702 ); 4. Connections ... Threaded connections: Copper: (1/4″), in line with standard ISO228/1, Aluminium: ( DN20DN50 ), in line with standard ISO7/1; 5.Temperature: -15 ...