Non riising stem gate valve, also known as rotary stem gate valve, refers to a gate valve where the valve stem rotates and its transmission thread is inside the body cavity. The threaded part of the valve stem and the contact between the valve stem nut and the medium are affected by the temperature and corrosiveness of the medium, making them suitable for non corrosive media and situations with poor external environmental conditions. In addition, compared to the rising stem gate valve, the height size of the valve is relatively small, but its opening and closing stroke is difficult to control, and an indicator needs to be added.
