Excess Flow Valves AAV 1200 Series

Excess Flow Valves can be used for filling,vapor equalizing and withdrawal in containers or line applications.Valves are connected to the bottom of the tank for liquid operations. It can also be connected to the top of the tank in vapor operation.When the flow rate increases, the valve closes itself and remains closed. When the pressure is balanced at the inlet and outlet of the valve, the spring of the valve moves the valve to the open position.