2), the motor pilot valve is a deceleration mechanism, in order to solve the sealing problem of the moving parts, the movement of the rod using the magnetic drive principle to manipulate the opening and closing of the pressure relief hole, so as to achieve the valve seal opening and closing. It is similar to the principle of solenoid pilot valve, only the time and reaction speed is slower than solenoid pilot valve. The problem is the same with the electromagnetic pilot valve.
3), the motor ball valve principle: the speed of the motor by the deceleration mechanism to slow down, increase the torque to promote the ball valve for rotation, to open and close the function. For the ball valve itself is a high manufacturing process requirements, the ball valve rotation strength to have a very standard parameters, that is, the rotary ball valve must be controlled in a set of process parameters within the scope. And, drive the ball running rod seal is also a key, which uses the basic O-type rubber ring for sealing, so the rubber ring is too tight will increase the torque, too loose will lead to poor sealing and leakage.
4), the plane stacked valve working principle: the deceleration mechanism will slow down the motor speed, will increase the torque to promote the plane stacked valve rotation, to open and close the function. Sealing is guaranteed by water pressure on the piece. Plane stack valve on the valve plate friction plane flatness and finish requirements are quite high, but also for the use of material requirements also have high requirements. In order to solve these problems, flat stacked valve lower stacked piece of ceramic substrate, the upper piece of other high strength wear-resistant materials, completely in accordance with the principle of chemical mechanical sealing manufacturing and processing, both to ensure a reasonable contact surface, but also to ensure the minimum friction coefficient.