What is the working principle of the five position valve of pneumatic components?
When the gas source fails and the gas supply is interrupted, the pressure of the air chamber B drops. Under the action of the spring force, the flat valve core 3 covers the nozzle and cuts off the passage of the air chamber A and the output port. That is, the pneumatic actuator seal the gas chamber, so that the working position of the control valve to remain in the original position, to play a role in maintaining the valve position
The working principle of pneumatic holding valve:When the air source signal enters the air chamber B, the force acting on the comparing member 2 is compared with the force of the spring 1. In normal condition, the thrust of the diaphragm comparing component 2 is greater than the given spring force. At this time, the flat plate valve 3 is lifted, the nozzle 4 is opened, and the channel is in a normal working state.
Five position valve is usually a combination control valve, such as five position six way valve, control two actuators, such as pneumatic motor or cylinder. When the handle is in the 1 and 2 positions, an actuating mechanism is operated, and the other executing mechanism is operated at the 3 and the 4 positions. When the handle is loosened, the spring automatically turns the handle back to the middle stop position so as to realize the self-locking requirement.
