Zhejiang Huibo Valve Technology Co.,Ltd
Address: Bin Gang Industrial City, Shameng Town, Yuhuan County, Zhejiang Province
To account for temperature changes in the lock-up phenomenon, usually in the open to the top position, and then back 1/2 -1 turn, as a fully open valve position. Therefore, the fully open position of the valve is determined by the position of the gate, that is, the stroke. Some of the gate valves, stem nut is located on the gate plate, the rotation of the hand wheel drives the valve stem to rotate, and the gate plate is lifted. Such a valve is called a rotary rod gate valve or a dark rod gate valve. When the gate valve is closed, the sealing surface can only be sealed by means of the medium pressure, that is, the pressure of the medium is only used to press the sealing surface of the gate to the valve seat on the other side to ensure the sealing of the sealing surface. This is self-sealing.