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Suitable Media for Stainless Steel Valves

Source: Bofa Valve Company   Author: Bofa Valve Company   Posted: 2013-10-18 16:35:15   Hits: 2006

Stainless steel valves are normally used in the working medium which has certain corrosion level. Any kind of valve material has relatively limited corrosion resistant ability to working medium. And the materials are affected by many factors. If the adopted methods in processing technical and heat treatment process are proper in the manufacturing process, thus a material’s corrosion resistance can be ensured. As to the nitric acid concentration > 98% medium, the stainless steel would have no corrosion resistance ability no matter what kind of heat treatment process are adopted. Therefore, It is not only necessary to select valves material according to the nature of the working medium, the study of the concentration of the medium, temperature, material heat treatment process and other factors which can influence the corrosion resistance of material should also be included.

Stainless steel valves have become the necessary purchased valve products applied in various industries. But only a few domestic valve manufacturer can reach the international standard. So customers must ask vendors to provide all kinds of stainless steel valve production and factory certificate before purchasing, thus reducing the ratio to buy unqualified products. Now the countries which can reach the international standard of the stainless steel valves and sanitary valves manufacturing mainly come from Japan, Germany, the United States, Britain, and Shanghai which is the domestic first-tier cities. Main factory and brand: Japan north jersey, Japan VENN, the UK, Germany TOP, America VTON and domestic Shanghai fairy butterfly valve co., LTD.

Stainless steel valve is controlling unit in the pipeline fluid conveying system. It is used to change the channel cross-section and flow direction of medium. It functions as diversion, globe, regulation, throttle, check, or the overflow pressure relief and other functions. Used for fluid controlling valve, from the simplest globe valve to extremely complex all kinds of valves used in automatic control system, the stainless steel specifications are various. Nominal diameter of stainless steel valves can be as small as the diameter of tiny instrument valve to the size of the valve diameter in 10 m industrial pipe. The stainless steel valve can be used to control the flow of water, steam, oil, gas, mud, all kinds of corrosive medium, liquid metal and radioactive fluid and other types of fluid. Working pressure of stainless steel valves are available from 0.0013 MPa to 1000 MPa ultrahigh pressure. It can work in the temperature from ultra-low 269 ℃ temperature to high 1430 ℃. A variety of transmission ways can be adopted to control valves, such as manual, electric, hydraulic, pneumatic, worm gear, electromagnetic actuator, electromagnetic, hydraulic, electric, hydraulic, pneumatic, hydraulic, spur gear, bevel gear drive, etc. In pressure, temperature or other forms of sensor signals, the stainless steel valves can be worked according to the requirement of the reservation action. While not depending on the sensor signals, valve can process simple actions such as opening and closing. Relying on the driving or automatic mechanism, the disc of valve can lift, slide, place or do rotary pendulum or rotary motion, so as to change the size of channel flowing area in order to realize the control function.