Please check with us the price and weight The Disk F valve is a pneumatic gate valve with in-line passage. The valve is equipped with a plug consisting of a pair of free metal discs to better adapt to the conical seat. All versions are equipped with an aluminum upper dipstick to indicate the condition of the valve. As an alternative to the dipstick, it is possible to have a plastic knob for the manual emergency operation of the valve. Suitable for suction systems and fluids compatible with aluminium. In the latter case, we recommend that you consult the compatibility table or contact our technicians.