The opening and closing component of American standard flange valves (gate valves) is the gate, and the movement direction of the gate is perpendicular to the direction of the fluid. The gate valve can only be fully opened and fully closed, and cannot be adjusted or throttled. The gate has two sealing surfaces, and the commonly used mode of gate valve is that the two sealing surfaces form a wedge shape. The wedge angle varies depending on the valve parameters, usually 50, and is 2 ° 52&# 039; when the medium temperature is not high;.

Installation and usage methods of American standard flange valves (gate valves):

1. Before installation, the valve chamber and sealing surface must be inspected to ensure that there are no dirt or sand particles attached; 2. All connecting bolts should be tightened evenly; 3. The inspection of the filling parts requires compression to ensure both the sealing of the filling and the flexible opening of the ram; 4. Before installing the valve, users must verify the valve model, connection size, and pay attention to the flow direction of the medium to ensure consistency with the valve requirements; 5. When installing valves, users must reserve the necessary space for valve actuation; 6. The wiring of the driving device must be carried out according to the circuit diagram; 7. The gate valve must be regularly maintained and must not be collided or squeezed arbitrarily to avoid affecting the sealing.