Solenoid valve has three channels a direct control for unload and load a volume of control with very short response time in operation under very high pressure

摘要

Direct control three-way solenoid valve for discharging and loading a control volume with very short response times operating under a very high pressure, characterised in that it comprises: - a tubular slide valve piston 58 securely fastened to a magnetic solid vane 70 which interacts with an armature 80 in order to constitute an electromagnet 80, 81, this piston 58 sliding in a fixed bore 46 and comprising one end 61 of reduced diameter interacting with a first seat 81 which separates the pipe 6 controlled by the solenoid valve from a chamber 27 at the low discharge pressure, and - a concentric differential piston 48 sliding axially in the slide valve piston 58 with one end 64 of reduced diameter interacting with a second seat S2 which separates a chamber 49 of the slide valve piston, communicating with the high pressure inlet 56, from an axial passage 32 emerging in the said controlled pipe 6. IMAGE