Open process

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[Wiki] mechanical [/ wiki] put pressure on the role of 1 in the closed position, the sphere of the single coil solenoid valve stem, presse d on the seat.
Turn handwheel, the valve stem is the reverse movement, the bottom of the angular plane so that the sphere to disengage the flange solenoid valve  seat.
3 stem continue to enhance the interaction and stem the spiral groove of the guide pin, the sphere began to friction-free to rotate.
4 up to the fully open position, the stem raised to the limit position, the sphere rotated to the fully open position.