This flow balancing valve is from the manufacturer Tiemme and is made of brass, with a length of 133mm. It is designed for a nominal diameter (DN) of 3/4 inch and features a smart home protocol of Thread. The valve is specifically used for flow meter applications, particularly in plumbing and fixtures. It is a Fill & Flush Heat Pump Setter with female thread, suitable for controlling water flow ranging from 8 to 35 litres per minute. Has 1" female unions to connect to your pipe work a male iron will be needed not inc.