ATOS proportional directional valve QVHZO-A06-12 available in Shanghai.

Brand ATOS/Italian Atos The main valve of an ATOS proportional directional valve is generally a spool valve, similar to a directional control valve. However, the valve spool is not driven by an electromagnet, but by the hydraulic pressure output from the pilot valve. This is similar to an electro-hydraulic directional control valve, except that the pilot valve of an electro-hydraulic directional control valve is an electromagnetic valve, while the pilot valve of a servo valve is a nozzle-flang