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.
Application Especially designed for high flow/high differential dispensing systems. Can also be used for filling, liquid withdrawal, and vapor equalizing in container or line applications.
Manometer excess flow is used to minimize gas leakage in case the manometer is damaged.