Filtration
Barr + Wray has over 60 years’ experience delivering filtration solutions across sectors including Oil + Gas, Food + Beverage, Pharmaceuticals, and General Industrial. We supply a wide range of filters and housings tailored to each application – and hold stock at our Glasgow facility to ensure fast delivery and reliable supply for our customers.
Our Filtration Technologies
Whether you’re filtering whisky, API fluids, process water, 
wastewater, or protecting downstream equipment, our filtration systems are engineered for performance, reliability, and compliance. We work closely with clients to understand their operational challenges and deliver tailored solutions that integrate seamlessly with existing infrastructure.
All filtration systems are designed to meet relevant industry standards, including WRAS and DWI, where applicable.
Each system is selected to meet regulatory standards and optimise operational efficiency, with options for automation, remote monitoring, and integration with broader water treatment processes available.
Filtration Solutions for Every Industry
Filter Housings
Constructed in stainless steel, Hastelloy, polypropylene, carbon steel, and custom materials
Filter Cartridges + Capsules
Rated from 0.03 to 150 microns for fine particulate removal
Filter Bags
Available in polypropylene, polyester, nylon, and other materials
Strainers
Y-type, mono-in-line, and duplex configurations
Filter
Manufactured with a true graded density, these elements exhibit a high void volume that results in low clean differential pressure losses and an excellent dirt holding capacity when compared to similarly rated elements. Each cartridge is manufactured with an integral support core for maximum strength. The superior structure remains integral even under severe operating conditions and is less prone to media migration and breakthrough often found on other unsupported spunbonded products. SupaGard cartridges are manufactured using a unique process that delivers nominal-rated filter media, offers ratings from 1 to 200µm, ensures consistent and reliable performance, and features a graded density structure for maximum dirt-holding capacity.
High-performance, absolute-rated depth filters for demanding applications. Available in polypropylene or nylon 6, with specialist variants.
Injection of seawater is often necessary to maintain reservoir pressure and increase the recovery factor in oil production. Sulphate Removal Processes (SRP) are used on water for injection to prevent scaling of the formation caused by sulphates reacting with barium and strontium in the crude oil. Removal of the sulphates will also reduce the risk of reservoir souring. Nano membranes used in the SRP require effective prefiltration to avoid premature fouling and ensure long life for these systems. Amazon Filters Ltd have developed absolute rated SupaSpun II SRP cartridges specifically for the Sulphate Removal Process.
VisClear spun bonded cartridge elements have been specifically designed to operate in the chemical processing and liquid coatings industries. Manufactured using Amazon Filters unique fibre processing system, it offers controlled performance and minimal fibre shed – an absolute requirement in the world of high tech chemistry.
Contour melt blown cartridge filters utilise the very latest in high strength fibre production to create a large diameter core-free element. Engineered to operate in high flow applications, the high capacity, low pressure loss media is an ideal choice for use in a wide range of liquid processing applications. No resins, binders or other materials are used in the manufacturing process, this results in a fibre free, uncontaminated process fluid.
SupaSpun FFC melt blown cartridge filters utilise the very latest in high strength fibre production to create a large diameter element ideal for high flow applications. The high capacity, low pressure loss media is an ideal choice for use in a wide range of liquid processing applications. No resins, binders or other materials are used in the manufacturing process, this results in a fibre free, uncontaminated process fluid. Operating in the forward flow direction they are available in 20”, 40” and 60” lengths offering significantly quicker cartridge replacement when compared to changing out many, many conventional 65mm diameter cartridges.
SupaSpun NN precision graded density filter elements are a further development of our already well proven absolute rated depth type filter. These high performance cartridges excel in dirt holding capacity and give extremely low clean pressure losses as a result of the strictly controlled manufacturing of the fibre matrix.
SupaPleat II high surface area pleated depth cartridges have been developed to suit industrial processes where high levels of efficiency are required, whilst maintaining extremely low pressure losses. In-house developments have optimised the filter media to give higher levels of porosity, and state of the art manufacturing technologies give excellent build quality
SupaPleat high surface area pleated depth cartridges have been developed to suit industrial processes where high levels of efficiency are required, whilst maintaining extremely low pressure losses. In-house developments have optimised the filter media to give higher levels of porosity, and state of the art manufacturing technologies give excellent build quality.
Engineering + Support
Our in-house engineering team provides full lifecycle support, from initial consultation to commissioning and beyond. Services include:
- Site surveys and water analysis
- Pilot trials and lab testing
- System design and specification
- Installation and commissioning
- Ongoing maintenance and optimisation
We also offer mobile Environmental Testing Units (ETUs) for on-site pilot trials, allowing clients to validate treatment regimes before full-scale implementation. These units support testing for turbidity reduction, iron and manganese removal, pH correction, and more.
Something else
Brewing + Distilling
Whether you're crafting whisky or brewing at scale, Barr + Wray delivers process equipment that handles the full fluid journey, from ingredient water to the final product. With precision pumping, filtration, and disinfection systems that protect quality and flavour.
Food + Beverage
From ingredient handling to final rinse, Barr + Wray provides fluid processing systems - including pumps, filters, and UV, that support hygiene, consistency, and production efficiency.
Oil + Gas
In high-demand environments, our engineered systems handle a wide range of fluids, from process water to chemical streams - with robust pumping, filtration, and disinfection solutions.
Utilities
Barr + Wray supports utility providers with reliable fluid handling systems that manage water, wastewater, and treatment chemicals - ensuring operational continuity and compliance.
Petrochemical
Our process equipment is built to handle aggressive fluids and complex chemistries, helping petrochemical plants optimise flow, filtration, and disinfection across critical systems.
Pharmaceutical + Biotechnology
We deliver precision-engineered systems for processing fluids used in drug formulation and biotech production - ensuring purity, consistency, and compliance with industry standards.
Chemical + Coatings
Our equipment handles everything from raw chemical inputs to final product filtration, helping manufacturers maintain fluid integrity and reduce waste.
General Industrial
Across diverse industrial sectors, Barr + Wray provides tailored fluid processing systems, from pumping and filtration to disinfection - that improve reliability and reduce downtime.
Building Services
From HVAC circuits to greywater reuse, Barr + Wray supplies pumps, filters, and UV systems that keep building services running efficiently and sustainably.
Aquaculture
Barr + Wray supports aquaculture operations with systems that manage both water quality and fluid circulation, from nutrient-rich feed solutions to waste stream control - using pumps, filtration, and UV technologies tailored to aquatic environments.