Download Application Note

Corrosion Resistant Housings: Fluoropolymer

When filtering aggressive chemicals and solvents it is imperative to choose the correct filter housing base material, coating or surface modification.

Fluoropolymer coatings can be applied either in powder or liquid form and offer a largely chemically inert coating some 50-100 microns thick with excellent temperature resistance and desirable properties such as FDA compliant top coats.

Their easy application to a wide variety of geometries combined with relatively low cost (compared to exotic alloy construction or surface treatments) makes them an attractive proposition in principle.

Enquiry form

Coatings can be applied from 50 microns to several millimetres and in different polymers such as PFA and ETFE. Which to choose is dependent on design considerations such as:

Types of solvents /chemicals being processed (compatibility).
Limitations on permeability / diffusion rates through the coating (length of service / chemical type).
Complexity of internal design of the housing. In general, the more complex the geometry the thinner the coating has to be. Amazon Filters can work with you to optimise the geometry for the most appropriate coating for your process. The housing geometry is a critical to ensure an integral coating and long service life.
Mechanical handling. how often is the housing disassembled (filter changes etc). Thin coatings of 50 100micron can be susceptible to mechanical damage.
Required approvals such as FDA.

Despite their superb chemical resistance, simple fluoroplymer coatings do have some weaknesses, primarily their permeability and susceptibility to damage that limit their useful life in service before repair or replacement is necessary.

All fluoropolymer coatings are microporous which means that the process fluid permeates over time, eventually reaching the substrate, resulting in blistering and delamination of the coating, and chemical attack of the substrate.

The coatings themselves are also vulnerable to damage from mechanical handling, particularly so in the case of a filter housing which is regularly opened for change out and requires careful handling to avoid damage when inserting or removing the filters.

As a result of operation experience Amazon Filters offers, depending on size of filter, two different types of advanced fluoropolymer coating using novel technologies to mitigate as far as possible the limitations of simple fluoropolymer coatings.

Housing design in terms of geometry is critical in ensuring the chemically resistant coatings adhere correctly over the entire internal surface. This means ensuring adequate corner radiuses match to the coating type and internal welds are ground smooth. Amazon Filters have years of experience in housing design and will be happy to recommend the most appropriate solution for your particular process.

FAQs

We offer high-quality retrofit solutions for all major filter manufacturers [including Pall, Millipore, Parker Hannifin, Sartorius, etc] to upgrade your existing filtration systems efficiently and effectively. Our filters are designed to fit a wide range of non-Amazon housings, including a range of endcaps and bespoke sizing options, ensuring seamless integration and optimal performance. All our filters meet or exceed industry standards through rigorous testing, this is how we can ensure that your filtration system will only improve when working with our team. Detailed technical data is provided to allow you to compare what you currently use with our products.

At Amazon Filters, we understand that every application has unique requirements. If you don't see a solution that fits your needs, our team of filtration experts is here to help. We specialise in designing custom solutions tailored to your specific challenges.

Amazon Filters is committed to helping you reduce costs without compromising on quality. Our solutions are designed to optimise efficiency and longevity, resulting in significant cost savings. By providing high-performance filtration solutions [filters & associated housings], we can extend the lifespan and lower maintenance requirements of your system, minimising downtime and reducing operational expenses.

We proudly deliver our high-quality filtration solutions worldwide. Wherever you are located we can supply you via our direct sales team and trusted distributor network.

We understand that every filtration process can have unforeseen problems that require immediate action to keep production running. Amazon Filters prides itself on being quick and able – our product range is manufactured in-house; this gives us the flexibility to prioritise production schedules. We have numerous examples of expediting urgent customer orders to ensure the impact on their production schedule was minimised.

How Amazon Filters supports your industry

Over 40 Years Experience

With our years of experience, Amazon Filters has a proven dedication to enhancing filtration systems and continuously innovating our processes to give you the best possible solutions.

Bespoke Solutions

We understand that with filtration there is no one solution to suit all customers' needs, which is why Amazon Filters looks to audit your filtration system and find a solution that is bespoke to your needs.

Quick & Able

Amazon Filters has provided filtration solutions to multiple large, global-scale companies in a variety of industries, including Municipal Water, Energy, Chemicals, Food & Beverage, Pharma, and Healthcare.