What is a vertical worm butterfly valve, and what is the difference between a turbine butterfly valv

Here are some of the well-known brands recognized in the valve industry, which are widely recognized and have a high reputation. While rankings may vary depending on time and market conditions, the following brands are generally considered to be among the top brands in the valve industry:

The following influential first-line brands of water system valves and industrial valves can be used as a reference, but for reference only: Suzhou Neway Valve, Shanghai Guanlong Valve, Shanghai Qizhong Valve, Sanhua, Su Yan, Shentong, Su Valve, Nanfang, Jiang.

First, the word Yao. The above manufacturers are only estimates and references, and the specific situation may vary or fluctuate at any time due to changes in a series of factors such as changes in the market, the size of the competition pattern, and the stability of product quality. As an indispensable key device in industrial production and civil facilities, the quality and reputation of the valve brand directly affect the satisfaction and trust of users.

These brands are known in the valve industry for their innovative technology, high-quality products and reliability. It is important to note that the market and industry are evolving rapidly, and different rankings may vary depending on time and region. For the most up-to-date ranking information, it is recommended to refer to industry reports, professional organizations or market research data for more detailed and accurate information.

It's just not the same way it is installed.

First, the characteristics are different.

1. Characteristics of turbine butterfly valve: the valve with metal seal generally has a longer life than the valve with elastic seal, but it is difficult to achieve complete sealing. Metal seals can accommodate higher operating temperatures, while elastomeric seals have the disadvantage of being limited by temperature.

2. Characteristics of manual butterfly valve: convenient and fast opening and closing, labor-saving, low fluid resistance, and can be operated with normal operation. Simple structure, small size and light weight.

Slurry can be transported with minimal liquid accumulation at the pipe opening. At low pressures, a good seal can be achieved. Good regulation performance.

Second, the application is different.

1. Turbine butterfly valve application: It is not only widely used in general industries such as petroleum, gas, chemical industry, water treatment, etc., but also used in the cooling water system of thermal power station.

2. Manual butterfly valve application: used in the sulfuric acid industry: the entrance and exit of the blower in front of the furnace, the entrance and exit of the relay fan, the electric demisting series and the Unicom valve, the entrance and exit of the S02 main blower, the converter adjustment, the entrance and exit of the preheater, etc.

Worm gear flange butterfly valve, also known as worm gear flange flap valve, is a simple structure of the control valve, but also can be used for low-pressure pipeline medium on/off control. Butterfly valve refers to a kind of valve in which the shut-off part (disc or butterfly plate) is a disc and rotates around the valve shaft to achieve opening and closing, which mainly plays the role of cutting off and throttling on the pipeline. The butterfly valve opening and closing part is a disc-shaped butterfly plate, which rotates around its own axis in the valve body, so as to achieve the purpose of opening and closing or adjusting.

Butterfly valves are suitable for transporting various corrosive and non-corrosive fluid media in engineering systems such as furnaces, coal gas, natural gas, liquefied petroleum gas, city gas, hot and cold air, chemical smelting and power generation and environmental protection, and are used to regulate and cut off the flow of media.

The butterfly valve has a simple structure, small size, light weight, and is composed of only a few parts. Moreover, it can be opened and closed quickly by only 90° rotation, which is easy to operate, and the valve has good fluid control characteristics. The butterfly plate of the butterfly valve is installed in the diameter direction of the pipe.

In the cylindrical channel of the butterfly valve body, the disc-shaped butterfly plate rotates around the axis, and the rotation angle is between 0° and 90°, and when the rotation reaches 90°, the valve is fully open. When the flange butterfly valve is in the fully open position, the thickness of the butterfly plate is the only resistance when the medium flows through the valve body, so the pressure drop generated by the valve is very small, so it has good flow control characteristics. There are two types of sealing types of butterfly valves: elastic seal and metal seal.

Elastomeric seal valves, the sealing ring can be embedded in the valve body or attached to the perimeter of the butterfly plate.

The worm gear is the driving mode, which corresponds to the handle; The flange is the connection method and the clamp is corresponding. Generally, it is flanged worm gear butterfly valve, clamp handle butterfly valve, etc.

Their models are different, the structure is different, their main driving parts are different, worm gear and straight rod are different, all belong to the same flange valve.

The picture posted upstairs is very intuitive.

The butterfly of the worm gear butterfly valve is installed in the direction of the large diameter of the pipeline. In the cylindrical channel of the butterfly valve body, the disc-shaped butterfly plate rotates around the axis, and the rotation angle is between 0° and 90°, and when the rotation reaches 90°, the valve is fully open.

Structure: Vertical plate structure, the stem is integral.

The sealing ring of the metal hard seal valve is a composite structure of flexible graphite plate and stainless steel plate, which is installed on the valve body, and the sealing surface of the butterfly plate is surfacing stainless steel.

The sealing ring of the soft-seal valve is made of nitrile rubber and is mounted on a butterfly plate. The body seat is surfacing stainless steel.

How it works. The design of the metal seal valve is based on the principle of triple eccentric construction, which takes advantage of the inherent cam effect to completely eliminate all friction between the seat and the seal ring during a 90-degree stroke.

The design of the rubber soft seal butterfly valve adopts a single eccentric structure, and unlike the centerline soft seal, the butterfly plate is rotated about 20 degrees and the seat is quickly separated from the sealing ring, thus reducing friction.

The actuation mode of the valve.

The driving mode of the valve is a worm gear manual mechanism, the handle is rotated 90° clockwise, the valve can be closed, and the handle is rotated 90° counterclockwise to open the valve. This type of valve should generally be installed horizontally in the pipeline.

Main Parts Material: Model Specification Valve Body Disc Stem Seal Packing DN150 and DN300 WCB 1Cr17Ni2 Flexible Graphite + Stainless Steel Flexible Graphite DN150 1Cr13 Nitrile Rubber.

Scope of application.

Metal sealed butterfly valve suitable temperature 400.

The soft seal valve is suitable for temperatures 90 - 100 rolls.

They are suitable for use in industrial pipelines such as air, water, steam and oil as opening and closing branches and pin preparation devices.

Performance specification of valve Type Specification Pressure test (MPa) Operating temperature ( ) Applicable medium Strength Sealed air seal DN150 and Mengyou DN300 425 Water, steam, air and oil DN150 100 water.