Gate valves are a traditional type of isolation valve where the valve head is turned to open and close the valve inside the body. Gate valves are available in sizes from 1/2" to 4". All ports are BSP Female.
Lever ball valves are easily turned on or off by a quarter turn of the lever. If the handle is in line with the valve body the valve is open, if it is at right angles then the valve is closed. Lever valves range in size from 1/4" to 4". All ports are BSP Female.