What are the common types of plastic valve materials?

Due to the advantages of light weight, corrosion resistance, non-scale adsorption, integrated connection with plastic pipelines and long service life, plastic valves have incomparable advantages in the application of plastic pipeline systems for water supply (especially hot water and heating) and other industrial fluids. At present, in the production and application of plastic valves in China, there is no reliable way to control them, resulting in uneven product quality of plastic valves for water supply and other fluids used in industry, and serious leakage in engineering applications, forming a kind of plastic valve can not be used, affecting the overall development of plastic pipe applications. China's national standards for plastic valves are in the process of being formulated, and their product standards and method standards are formulated according to international standards.

The types of plastic valves in the world mainly include ball valves, butterfly valves, check valves, diaphragm valves, gate valves and globe valves, etc., the structural forms mainly include two-way, three-way and multi-way valves, and the raw materials mainly include ABS, PVC-U, PVC-C, PB, PE, PP and PVDF.

The characteristics of ABS, PVC-U, PVC-C, PB, PE, PP and PVDF are recommended for your mobile phone** to shape the app together, you can find relevant answers in it, you can also ask questions in it, and more professional people will help you answer.

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.

Cast iron, mild steel, alloy steel, stainless steel and heat-resistant steel, special valve steel, copper alloy, aluminum alloy, nickel alloy, plastic, wood.

As long as it is not too luxurious (**** or something) or too hard (tool steel or something), it can be used as a valve body material.

Commonly used valve body materials can be divided into (refer to the division method of Vton in the United States):

1) Metal material valve: Its valve body and other parts are made of metal material. Such as cast iron valves, ductile iron valves, carbon steel valves, stainless steel valves, alloy steel valves, copper alloy valves, aluminum alloy valves, lead alloy valves, titanium alloy valves, Monel alloy valves, etc.

The common ones are Vton cast iron body butterfly valve, ductile iron body butterfly valve, carbon steel body material ball valve, stainless steel body material ball valve, Monel alloy body material globe valve, etc.;

3) Metal body lining valve: The shape of the valve body is metal, and the main surfaces inside that are in contact with the medium are lining, such as rubber lining valves, plastic lining valves, ceramic lining valves, etc. For example, the diaphragm valve made of carbon steel fluorine-lined valve body, the butterfly valve made of carbon steel fluorine-lined valve body, the fluorine-lined ball valve of stainless steel, the fluorine ball valve of carbon steel-lined valve body, etc.

The main body materials are: C carbon steel, I1Cr5Mo chromium-molybdenum steel, HCR13 series stainless steel, K malleable cast iron, L aluminum alloy, P0Cr18Ni9 series stainless steel, PL00Cr19Ni10 series stainless steel, Q ductile iron, R0Cr12Ni12Mo2 series stainless steel, RL00Cr17Ni14Mo2 series stainless steel, S plastic, T copper and copper alloy, Ti titanium and titanium alloy, V Chromium-molybdenum vanadium steel, Z gray cast iron.

1. There are 4 kinds of valve materials: gray cast iron, malleable cast iron, ductile iron and nickel cast iron.

2. Gray cast iron refers to cast iron with flake graphite, which is called gray cast iron because the fracture is dark gray when fractured. The main components are iron, carbon, silicon, manganese, sulfur and phosphorus, which is the most widely used cast iron, and its output accounts for more than 80% of the total cast iron output.

3. Malleable cast iron, which is made of molten iron of a certain chemical composition poured into white blanks, and then annealed into cast iron, has high strength, plasticity and impact toughness, and can partially replace carbon steel.

4. Ductile iron is a high-strength cast iron material developed in the fifties of the 20th century, and its comprehensive properties are close to steel.

5. The metallographic structure of nickel cast iron is spherical graphite distributed on the austenitic body containing a small amount of carbide, so it has good high temperature resistance, corrosion resistance and wear resistance.

Gate valves have a very wide range of applications in our production, and many people will confuse them with our globe valves. Gate valve because the internal fluid channel of the valve body is straight, the fluid flows in a straight line, and the flow resistance is small, which also makes us more labor-saving when opening and closing, which is not available to the globe valve. Of course, the scope of use of gate valves of different materials will be different.

What are the common materials of gate valves?

1. Brass tube gate valve.

There is also a fixed standard for the production of brass tube gate valves, and its nominal pressure: working medium: water, oil, steam, corrosive liquid; Operating Temperature:

20℃≤t≤170℃；The cylindrical pipe thread conforms to the ISO228 standard. Applicable medium: water, oil, gas, steam, etc., are used in our mechanical equipment, chemical equipment, water supply and drainage equipment, papermaking equipment, manufacturing equipment, petrochemical equipment, power equipment, etc.!

2. Cast iron soft seal gate valve.

Cast iron soft seal gate valve flat bottom seat, no dirt accumulation, make the seal more reliable, the disc is coated with nitrile rubber, and the valve trim is made of corrosion-resistant and rust-free steel and copper alloy materials, which can be used in the sewage system to adapt to the harsh working environment. It is widely used as a regulating and intercepting device in fluid pipelines such as tap water, sewage, construction, petroleum, chemical industry, food, medicine, textile, electric power, shipbuilding, metallurgy, energy system, etc.

3. Carbon steel gate valve.

Carbon steel gate valves can be divided into parallel gate valves, wedge gate valves, lifting gate valves, rotary rod gate valves, quick opening and closing gate valves, shrinking gate valves, flat gate valves, etc. The carbon steel gate valve is suitable for small-diameter pipelines with class150 2500 and working temperature -29 425 or -29 500, and is used to cut off or connect the medium in the pipeline.