avta is a self-acting, thermostatically operated valve for use in cooling applications. the valve is commonly used in connection with hydraulic stations, and is often named the "fit and forget" valve, due to its immense reliability, proven throughout decades.the valve is available with built-in sensor (fjva version), and with a valve body in brass, dezincification resistant brass or stainless steel.connections from 3/8" up to 1", working pressure up to 16 bar, medium temperature up to 130 °c.