The Maestrini ball valve is constructed from CW617N brass. This ball valve is suitable for water, petrol, gasoline, diesel and oil. The valve has a threaded 1/2" BSP female port each end as well as a red butterfly tee handle on top which requires a 1/4 turn for on / off action. This Maestrini ball valve comes supplied with a Teflon seal and a stem O ring.