Pressure Vessels for Water Treatment

Durable Pressure Housings for Industrial Water Treatment Applications

AllWater Technologies supplies a wide range of pressure vessels for water treatment, built to support high-performance filtration, softening, and ion exchange systems. Designed for use across industrial and commercial applications, these vessels provide the structural backbone for media-based treatment processes and are available in a variety of materials, sizes, and configurations.

From lightweight composite vessels to high-pressure stainless steel designs, our product range offers robust, cost-effective solutions for housing filtration and resin media. All vessels can be specified with compatible distribution systems, valve heads, and connections to suit your system design.

Composite Vessels

Lightweight, Corrosion-Resistant Pressure Housings

Our standard composite vessels are manufactured using a seamless polyethylene liner reinforced with a durable fibreglass outer shell. These vessels are ideal for use in filtration and softening systems where pressure resistance and corrosion protection are essential.

Features:

  • Operating pressure: Up to 10 bar
  • Temperature range: 1°C to 49°C
  • Sizes available: From 6” x 17” to 48” x 72”
  • Port options: 2.5” and 4” top and/or bottom openings
  • Media capacity: From 5 to over 500 litres
  • Approvals: NSF/ANSI 44 and CE certified
  • Materials: PE inner shell with FRP outer wrap

These vessels are widely used in softeners, multimedia filters, activated carbon systems, and other treatment units. They offer a high strength-to-weight ratio and require minimal maintenance over their operational lifespan.

Steel and Stainless Steel Vessels

High Pressure & Temperature Applications

Where composite vessels may not be suitable due to pressure or temperature demands, we offer a range of fabricated steel and stainless steel vessels designed for more bespoke process requirements.

Specifications:

  • Construction: Carbon steel (painted or epoxy-coated), or 304/316L stainless steel
  • Pressure rating: Up to 16 bar or higher on request
  • Temperature rating: Up to 120°C
  • Surface finishes: Internal epoxy lining, external powder coating, or passivated stainless
  • Inspection ports: Manways, sight glasses, or sampling taps available
  • Flanged or threaded connections: As per site specification

These are typically used in industrial demineralisation systems, hot water processes, and chemical handling setups. Each vessel can be fabricated to bespoke sizes, with options for supports, nozzles, and lifting points.

Internal Distribution Systems

Optimised Flow and Media Performance

Every pressure vessel requires a suitable distribution system to ensure even flow through the treatment media. AllWater offers a range of internal assemblies tailored to vessel size and media type.

Including:

  • Top and bottom distributors
  • Hub and lateral systems
  • Stacked distributors for layered media
  • Single-point injection or radial flow options

Our distribution systems are manufactured from corrosion-resistant materials such as PVC, ABS, polypropylene, or stainless steel. They are designed to reduce channeling, improve backwash efficiency, and maximise the lifespan of the media bed.

Our support includes

Telephone & remote diagnostics for rapid fault identification

System troubleshooting and root cause analysis

Planned service visits tailored to your production schedule

Guidance on optimisation, upgrades and retrofit options

Ongoing training and user support post-installation

On-site engineering support from qualified specialists

Water Filtration Vessels

Built to Support Multi-Media, Carbon, and Iron Removal Filters

Our vessels are frequently supplied as part of a complete water filtration system, including pre-treatment for reverse osmosis, closed-loop polishing, and solids removal.

Vessel designs can be configured for:

  • Downflow or upflow operation
  • Pressure filters or gravity-fed systems
  • Manual or automated backwash capability
  • Bunded skids or containerised systems

We ensure compatibility with a wide range of filtration media, including sand, anthracite, garnet, activated carbon, manganese dioxide, and ion exchange resins.

Typical Vessel Specifications

Parameter

Composite Vessel

Steel/Stainless Vessel

Diameter range

6″ to 48″

300mm to 2000mm+

Height range

17″ to 72″

1m to 5m+

Max working pressure

10 bar

16+ bar

Max temperature

49°C

120°C

Connection types

BSP, NPT, flanged

PN10/16, ANSI, DIN flanged

Internal lining

PE liner

Epoxy, rubber, or stainless

Lifespan

10–15 years (typical)

20+ years (with maintenance)

Custom options such as manways, sight glasses, lifting lugs, and insulation jackets are available to meet site and process requirements.

Applications

Our pressure vessels for water treatment are used across a wide range of industrial sectors, including:

  • Pharmaceutical and life sciences
  • Food and beverage processing
  • Energy and power generation
  • Aerospace and automotive
  • Chemical manufacturing
  • Water utilities and municipal systems
  • Breweries and distilleries
  • Metal finishing and surface treatment

Whether for a standalone softener or part of a multi-stage treatment plant, we can specify and supply the right vessel for your operational and compliance needs.

Why Choose AllWater?

AllWater Technologies combines engineering experience with trusted supplier relationships to deliver vessel solutions that perform reliably in the most demanding environments.

Our Service Includes:

  • Expert vessel selection based on flow rate, media, and process goals
  • CAD drawings and technical submittals for approval
  • Fabrication of bespoke vessels and supports
  • Matching of vessels with resin/media, heads, and fittings
  • UK delivery with offloading options
  • Full installation, commissioning, and support

We work closely with clients to ensure vessels integrate smoothly with upstream and downstream treatment processes, saving time on-site and reducing long-term maintenance demands.

Committed to Excellence

"We have been very happy with AllWater’s professionalism and response times when we have needed help with the plant. The staff are all very helpful and knowledgeable and we are very satisfied with the service provided."

Jamie Davies

Turnspeed

"We needed a DI plant that is capable of producing the processing water to serve our Chemical Process lines twelve rinse tanks, 24 hrs a day, 7 days a week at a max of 20.00 μS/cm. The water plant is now consistently cleaning the water to 1.00 μS/cm."

Steve Silk MBE

Marshall Aerospace

"We have built a good relationship with AllWater and continue to enjoy service contracts with them. They know what they’re doing and we’re always happy with their service"

Andy Best

Production Director - Vertik-Al

"We needed a DI plant that is capable of producing the processing water to serve our Chemical Process lines twelve rinse tanks, 24 hrs a day, 7 days a week at a max of 20.00 μS/cm. The water plant is now consistently cleaning the water to 1.00 μS/cm’"

Amelia

Production Manager

"AllWater Technologies installed their pure water system in our premises to replace our old system which went into retirement. The level of service and maintenance that AllWater are giving us will ensure that we get the quality of product and the length of service we are looking for out of our plant. Their level of service is excellent."

John Malone

excel gs ltd

"Thank you for all your support. I have to say that I am really impressed with All Water approach to provide a really good service. Thank you again."

Radu Vitanescu

Liberty Engineering

"AllWater have provided great service, specialist advice and an effective waste water treatment solution for our site."

Paul Pearcy

Warburtons

"AllWater have always delivered us a great service and are equally competent maintaining existing kit or installing new. They’re friendly and reliable and, perhaps most importantly, trustworthy."

Phil Parkinson

Joseph Holt

"AWT professional service allows our site to run with minimal downtime when unplanned breakdowns happen. AWT service is invaluable in maintaining our production lines throughout."

Adam Cook

Qsil

"The person was very polite and explained everything in detail. Report was typed and easy to understand."

Richard Fox

London and Brighton Plating

"We are more than satisfied with the level of service we receive from everyone at AWT. Excellent work, Thank you!"

Daniel Holden

Karas Plating

"AllWater Technologies provide an exceptional level of knowledge and support, and we cannot fault their service and commitment. The team consistently exceed expectations and although others may offer a cheaper alternative, we have every confidence that they could not offer better!"

Eric Allen

Albumedix LTD

"By using AWT we know that our plant and equipment is being maintained to the highest standard using the expertise and knowledge that we find second to none. When issues arise it is paramount that we can resolve these issues promptly; AWT are always there to support us."

Allen Staunton

Creganna Medical

"Using All Water Technologies has been a breath of fresh air. Their attentive service from the first call through to delivery completion, has made the management of our water treatment plant very easy indeed. We wash over 2.5 million items of tableware for the event industry every year, working at some of the UK’s most prestigious events, so having peace of mind over our washing operation is essential. I would recommend AWT to anyone’"

Joe Nisbet

Jongor Hire

"AWT offered Rimex a bespoke solution to our water softening and storage requirements. They took charge and managed the project efficiently and effectively from the very beginning. I am delighted with the outcome and I will continue to use AWT for preventative maintenance and any other future projects."

Daniel Meakin

Rimex Metals

"All went very well with the plant being well finished, installation being of a high standard and all works being completed on time and to specification."

Dom Oughton

Optimum

Ready for Support?

Unsure how to optimise water treatment for your industry? Our team is here to help. We’ll assess your requirements, design a solution, and provide the quality, reliability, and service you deserve. Reach out to discuss how we can help you achieve your operational goals.

Get in touch today to discuss your requirements.

Let’s keep your systems running at their best.

Water System Support: Frequently Asked Questions

We assess key parameters like flow rate, media type, operating pressure, and temperature. Based on these, we recommend the most appropriate vessel material, size, and configuration.

Yes. We can match legacy vessels or design replacements that fit within your existing footprint, with updated connections and improved performance.

Our standard range includes vessels from 6” x 17” up to 48” x 72”. Larger or custom options are available in steel or stainless steel.

 Yes. All vessels are supplied with the appropriate internal distribution system, unless specified otherwise.

Many of our vessels are NSF or WRAS approved. Let us know your requirements and we will provide certified options.

Water Treatment Case Studies

Explore our case studies to see how AllWater Technologies has partnered with clients across various industries to design and deliver tailored water treatment solutions. Each project highlights our commitment to meeting exacting standards, solving unique challenges, and optimising water management processes to help our clients achieve their operational goals. Discover how our expertise and dedication to quality have made a real difference for businesses just like yours.

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Aero Fabrications Ltd
A specialised engineering firm in aerospace manufacturing, Aero Fabrications Ltd. sought support for its business expansion. To meet this need, AllWater Technologies designed and installed a comprehensive water treatment...
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Turnspeed Precision Engineering
Turnspeed, a renowned specialist in automotive component manufacturing, collaborated with AllWater Technologies to address challenges in implementing a new plating process.
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Kingsley Beverages
AllWater Technologies provided a complete, turnkey water treatment system for Kingsley Beverages’ new canning line, handling everything from concept and design to build and ongoing management.
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Marshall Aerospace
Marshall Aerospace, a leading MRO and Aerospace component manufacturing facility, faced a critical challenge when relocation there Manufacturing and Special Processes facility to a new site, i...
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Vertik-Al Ltd
Vertik-Al, a leading provider of vertical and horizontal Aluminium powder coating for the architectural Aluminium industry, faced a critical challenge when European regulations...
READ ARTICLE

A Handful of our Valued Clients

Get in Touch with AllWater Technologies

We’re here to help with all your water treatment needs. Whether you have questions about our services, want to discuss a project, or need support, our team is ready to assist you. Fill out the form for general enquiries, or you are welcome to email direct or give us a call.

AllWater House

Unit 2,

Cheddar Business Park,

Wedmore Road,

Cheddar

BS27 3EB

Opening hours

Mon-Fri: 08:30-17:30 (GMT)