INTERMITTENT VALVE AND INTERMITTENT COATING APPARATUS

An intermittent valve includes: a valve main unit having: an inflow chamber, a supply chamber and a return chamber; a piston; a supply valve allowing a coating material to flow from the inflow chamber to the supply chamber when the piston is in a first position and blocking the flow when the piston is in a second position; and a return valve blocking the coating material from flowing from the inflow chamber to the return chamber when the piston is in the first position and allows the flow when the piston is in the second position. The valve diameter of the supply valve is 1.53 times or more the valve diameter of the return valve.