Characteristics And Advantages Of Fluorine-lined Gate Valve

Fluorine-lined valves

and their various pipeline accessories have been rapidly applied and promoted in various fields such as petroleum, printing and dyeing, and chemical industry, showing strong vitality. As the first choice in the project, they have attracted great attention and favor from various engineering design units and construction units. They are a promising product with great market potential.

Lined Gate Valve is a commonly used opening and closing valve, which uses a wedge-shaped gate with two side seals to connect or cut off the medium in the pipeline. Huaguang brand fluorine-lined gate valve adopts manual, flange connection, rising stem wedge-shaped rigid single gate, the sealing material is polytetrafluoroethylene, and the valve body material is a gray cast iron fluorine-lined plastic gate valve. Gaojing fluorine-lined gate valve has the advantages of corrosion resistance, good sealing effect, small fluid resistance, strong flow capacity, and zero leakage of medium.

Fluorine-lined gate valve is a kind of valve. The opening and closing parts of the fluorine-lined gate valve are gate plates, and the movement direction of the gate plates 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. The two sealing surfaces of the commonly used gate valve form a wedge shape. The wedge angle varies with the valve parameters and is 2°52' when the medium temperature is not high. The gate of the wedge gate valve can be made into a whole, called a rigid gate; it can also be made into a gate that can produce a slight deformation to improve its processability and compensate for the deviation of the sealing surface angle during the processing. This gate is called an elastic gate.

Features of fluorine-lined gate valves

1. The valve body has two shapes: flat and round: GB valves use round bodies, ANSI pound-class valves DN≤300Lb use flat bodies, and DN≥400Lb use round bodies;

2. The sealing pair is FPF (F46)/FEP (F46) or other material combinations, with a small friction coefficient and low opening and closing torque;

3. The packing uses PTFE (F4) standard packing, which has good sealing performance and is easy to repair and replace;

4. The gate with elasticity can compensate for the wedge angle deviation between the gate sealing surface and the valve seat sealing surface, with good fit and good sealing effect;

5. The medium can pass through the gate valve from any direction on both sides, which is suitable for opening and closing devices on pipelines where the medium direction may change.