Recently, many customers do not understand some of the characteristics of flanged cast steel gate valves. Today, the professional editor of Furi Valve will bring you the advantages and disadvantages of flanged cast steel gate valves. I hope that everyone will understand more clearly.

Flanged cast steel gate valve, full name "flange connection API cast steel gate valve", suitable for ANSI Class 150 ~ 2500, working temperature <600 ℃ petroleum, chemical, thermal power stations and other pipelines under various working conditions, cut off or connect Pass the pipeline medium. Applicable media: water, oil, steam, etc. Operation methods are: manual, gear transmission, electric, pneumatic, etc.

Structural features:

For a long time, the general gate valves used in the market are generally leaking or rusty. Our company introduced European high-tech rubber and valve manufacturing technology to produce elastic seat seal gate valves, which overcomes the defects of general gate valve sealing, rust and other defects. The gate valve uses the compensation effect of a small amount of elastic deformation generated by the elastic gate plate to achieve a good sealing effect. The valve has obvious advantages such as light switch, reliable sealing, good elastic memory and service life. It can be widely used as regulating and intercepting device on tap water, sewage, construction, petroleum, chemical industry, food, medicine, light textile, electric power, shipbuilding, metallurgy, energy system and other body pipelines.

Gate valve structure (features):

Light weight: the body is made of high-grade nodular cast iron, the weight is reduced by about 20% to 30% compared with the traditional gate valve, and the installation and maintenance are convenient.

Flat-bottom gate seat: Traditional gate valves are often deposited in the bottom groove of the valve due to foreign objects such as stones, wood blocks, cement, iron filings, debris, etc. The bottom of the elastic seat sealing gate valve adopts the same flat bottom design as the water pipe machine, which is not easy to cause debris deposition and makes the fluid unimpeded.

Overall encapsulation: the gate is made of high-quality rubber for overall internal and external encapsulation. The European first-class rubber vulcanization technology allows the vulcanized gate to ensure accurate geometric dimensions, and the rubber and nodular cast iron gate are then firm and not easy to fall off. Good elastic memory. water

Precision-cast valve body: The valve body adopts precision casting, and the precise geometric size makes the valve body without any finishing to ensure the tightness of the valve.

Gate valve has the following advantages:

1. The fluid resistance is small, and the sealing surface is less brushed and eroded by the medium.

2. Less effort to open and close.

3. The flow direction of the medium is not restricted, without disturbing the flow or reducing the pressure.

4. The shape is simple, the structure length is short, the manufacturing process is good, and the application range is wide.

The disadvantages of gate valves are as follows:

1. Erosion and scratches are easily caused between the sealing surfaces, and maintenance is difficult.

2. The shape is large, it needs a certain space to open, and the opening and closing time is long.

3. The structure is more complicated.

The types of gate widths can be divided into wedge gate gate valves and parallel gate gate valves according to the configuration of the sealing surface. Wedge gate gate valves can be divided into: single gate pole type, double gate gate and elastic gate gate; parallel gate gate 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: open rod gate valve and hidden rod gate valve.