C4 steel stop valve,Stainless Steel Stop Valve ,stop valve

C4 steel (00Cr14Ni14Si4) is a high-silicon ultra-low carbon ideal nitric acid resistant stainless steel, a major breakthrough in national corrosion resistance materials during 85 years.

Compared with high-purity aluminum, high-silicon cast iron and ordinary stainless steel,

C4 steel has the following advantages:

There is no knife edge corrosion after welding, and it has good resistance to small hole corrosion and excellent resistance to stress corrosion;

Second, C4 steel toughness is good, increase the safety and reliability, to avoid the danger of industrial pure titanium in the fuming nitric acid fire, explosion;

C4 steel is far better than the corrosion resistance of high-purity aluminum, and has the mechanical properties of high-silicon cast iron can not be matched, and its welded joints have comparable mechanical properties and corrosion resistance with the base material. C4 steel is very good for pipes, valves, condensers, pumps and other devices used in the indirect method (magnesium nitrate method) concentration of nitric acid. C4 steel is :00Cr14Ni14Si4 ultra-low carbon austenitic stainless steel, with excellent resistance to intergranular and stress corrosion. Nitric acid is an important chemical raw material, which is widely used in many sectors of national economy. No matter producing nitric acid or using nitric acid, the corrosion problem of nitric acid will be encountered. Nitric acid is a strong oxidizing acid, and even dilute nitric acid has strong oxidizing properties. Stainless steel has good corrosion resistance due to its easy passivation in dilute nitric acid.

C4 steel globe valve is a strong acid and alkali resistant valve, generally used in chemical plants, tank trucks, concentrated nitric acid pipeline. It is widely used in pipelines or pipelines where the medium is concentrated nitric acid.C4 steel globe valve is mainly used to cut off (or connect) pipeline medium, suitable for nitric acid, acetic acid and other occasions in chemical industry. The design of rotary lifting valve stem, hand wheel, valve body and valve cover is strictly calculated. It has good strength, stiffness and flow capacity. C4 steel globe valve valve cover design of the upper seal seat, in the full open state to make the packing seal more reliable, and convenient replacement of packing. Suitable for petroleum, chemical industry, metallurgy, electric power, paper making, pharmaceutical, food, water treatment, petroleum, chemical industry, thermal power station and other working conditions of the pipeline, cut off or connect the pipeline medium.

Packing of Standard Packing: 

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 470 gallon liquid totes Special package is available on request. E FORUs’  is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition.

C4 steel globe valve selection principle:

1, high temperature, high pressure medium pipelines or devices should be selected stop valve. Such as thermal power plants, nuclear power plants, petrochemical systems of high temperature, high pressure pipeline.

2, the pipe road convection resistance requirements are not strict. That is, where there is little consideration for pressure loss.

3, small valves can be selected needle valve, instrument valve, sampling valve, pressure gauge valve, etc.

4, there is flow regulation or pressure regulation, but the adjustment accuracy is not high, and the pipe diameter is relatively small, such as the nominal passage ≤50mm of the pipe, should be selected.

5, synthetic industrial production of small fertilizers and large fertilizers should be selected nominal pressure PN160 nominal pressure 16MPa or PN320 nominal pressure 32MPa high pressure Angle type stop valve or high pressure Angle type throttle valve.

6. In the desiliconization workshop in the production of alumina Bayer method and on the pipe road that is easy to coking, it is easy to choose the direct-flow C4 steel stop valve or direct-flow throttle valve with the valve body separated, the valve seat can be removed, and the cemented carbide seal pair.

7, in the urban construction of water supply, heating engineering, nominal through the smaller pipeline, you can choose cut-off, balance valve or plunger valve, such as nominal through less than 150mm pipeline.