Esko Pacific adapts instrumentation to meet operating challenges
THE CHALLENGE: Keep processes running smoothly in harsh operating environments.
THE SOLUTION: Choose equipment made with materials to withstand the challenge.
BUT WAIT…. what are the best material choices?
Caustic and corrosive solutions used in processes combined with extreme temperature variations can make for a challenging operating environment. Robust solutions are needed to keep processes running smoothly.
Stainless steel (SS) is often the “goto” choice for durability, safety and reliability in many types of manufactured products from industrial enclosures to cookware. But not all Stainless is the same. What’s in the composition can dictate the life of a metal component.
What makes SS so stellar?
SS is not a single alloy; rather it is a group of iron-based alloys containing at least 10.5% chromium, the material used in “chrome” coatings, such as automobile bumpers. Chromium and other elements are added during the melting of the steel to make a homogeneous mixture that enhances the metal’s resistance to corrosion as well as other properties needed for different applications. At the micro level, the chromium in the mix changes the way the iron is oxidized and the added nickel enhances this effect. Adding molybdenum gives it an extra boost for even better corrosion resistance.
The American Iron and Steel Institute (AISI) numbering system numbers types in the 200, 300 and 400 series with the most common choices in industrial applications being the 300 series.
What’s the difference between SS304 and SS316?>
SS304 contains 18% chromium and 8% nickel. It is durable and resistant to both oxidation and corrosion. It is often used in auto molding and wheel covers, kitchen equipment, pressure vessels and piping.
SS316 contains 16% chromium, 10% nickel and 2% molybdenum for increased resistance to salt corrosion and chlorides. This makes SS316 the best choice for applications where metal contamination simply cannot be allowed to happen (e.g. pharmaceutical manufacturing), in places with exposure to the elements (e.g. outdoor equipment and enclosures) and a wide range of other applications.
Its heat-resistance and defence against chemical attacks from chlorides, iodides and bromides make it the obvious choice for harsh industrial environments.
Are there any other choices besides stainless?
Corrosive attacks happen at a molecular level. Kynar® is a resin made of polyvinylidene fluoride, commonly called PVDF
This material has high electrochemical stability, abrasion resistance and resistance to a wide range of aggressive chemicals typically acids, solutions of salt, chlorinated hydrocarbons, alcohol and halogens.
This resistance, paired with a high temperature rating, make it well suited for use in a range of industrial equipment applications such as piping, fittings, mechanical components, fabricated vessels, pumps and more.
What should I look for when choosing metering equipment?
Each application is unique. Operating conditions and variations will dictate the best material choices for installed equipment. It’s best to seek advice from the manufacturer as to the types of materials available for components.
Recognizing the need to provide industrial users with the most durable product selections, Esko Pacific offers a range of customizable metering equipment utilizing both SS and Kynar as well as other materials well-suited to less-demanding applications.
Esko’s newest product innovation is the ESF-S stainless steel body seal water meter. In response to customer requirements, the meter incorporates an optional, robust SS316 body added to the many other features that contribute to its ease of use and installation in industrial seal water applications. The meter is also available in Kynar and Delrin ® single- or dual-tube models.
Esko Pacific, www.eskopacific.com