The opening and closing component of a low-temperature gate valve is the gate, whose movement direction 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 'when the medium temperature is not high. The gate plate of a wedge gate valve can be made into a whole, called a rigid gate plate; It can also be made into a gate that can produce slight deformation to improve its processability and compensate for the deviation of the sealing surface angle during the processing. This type of gate is called an elastic gate.

Precautions for Installation of Low Temperature Gate Valves

1. Before installing the low-temperature gate valve, it is necessary to check the valve chamber and sealing surface, and no dirt or sand particles are allowed to adhere to them;

2. All connecting bolts should be tightened evenly;

3. Check the packing area and ensure that it is tightly pressed to ensure both the sealing of the packing 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 drive 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.