Working Principle And Product Features Of Fluorine-lined Gate Valve

Introduction:

Fluorine-lined gate valve is a type of valve. The opening and closing parts of the fluorine-lined gate valve are gates. 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. The two sealing surfaces of the most commonly used mode 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 process. This gate is called an elastic gate.

Working principle:

Turn the handwheel, and through the advance and retreat of the handwheel and the valve stem thread, lift or lower the valve plate connected to the valve stem to achieve the opening and closing effect

Types of gates can be divided into wedge-type gate valves and parallel gate valves according to the sealing surface configuration. Wedge-type gate valves can be divided into: single gate type, double gate type and elastic gate type; parallel gate valves can be divided into single gate type and double gate type. According to the thread position of the valve stem, it can be divided into two types: rising stem gate valve and concealed stem gate valve.

The installation and maintenance of Lined Valve should pay attention to the following matters:

The handwheel, handle and transmission mechanism are not allowed to be used for lifting, and collision is strictly prohibited.

The double gate valve should be installed vertically (that is, the valve stem is in a vertical position and the handwheel is at the top).

The gate valve with a bypass valve should open the bypass valve before opening (to balance the pressure difference between the inlet and outlet and reduce the opening force).

The gate valve with transmission mechanism should be installed according to the product manual.

If the valve is frequently opened and closed, lubricate it at least once a month.

Product features:

Light weight: The body is made of high-grade ductile iron, which is about 20%~30% lighter than the traditional gate valve, and is easy to install and maintain.

Flat-bottomed gate seat: Traditional gate valves are often blocked by foreign objects such as stones, wood blocks, cement, iron filings, and debris in the groove at the bottom of the valve after water washing, which can easily cause leakage due to inability to close tightly. The bottom of the elastic seat seal gate valve adopts the same flat bottom design as the water pipe machine, which is not easy to cause debris to accumulate, allowing the fluid to flow unimpeded.

Overall rubber coating: The gate plate is made of high-quality rubber for overall internal and external rubber coating. Europe's first-class rubber vulcanization technology enables the gate plate after vulcanization to ensure accurate geometric dimensions, and the rubber and ductile iron gate plate are firmly connected, not easy to fall off and have good elastic memory.

Precision casting valve body: The valve body is precision cast, and the precise geometric dimensions ensure the sealing of the valve without any fine machining inside the valve body.