Porvair

What Porvair does

Porvair plc (LSE: PRV) is a specialist filtration and separation technology group headquartered in King's Lynn, United Kingdom, manufacturing a broad portfolio of metallic, polymeric, and membrane filtration products for industrial customers. The company's technology base centers on proprietary Sinterflo® sintered metal fibre, powder, mesh, and composite media — produced in 316L stainless steel, Inconel®, Hastelloy®, and Monel® alloys — alongside Vyon® sintered porous plastics, GasPro™ ultra-high-purity gas filters for semiconductor manufacturing, and Biofil™ polyethersulphone membrane cartridge filters for pharmaceutical and biotechnology applications. Its product catalog spans approximately 40+ named product families including nuclear-grade disposable elements (NuKey™), polymer melt candle filters (Rempak™), HEPA filtration systems, mist eliminators, spargers, and flame arrestors.

The group operates across ten primary verticals — aerospace & defence, nuclear, bio-pharmaceutical, microelectronics, process industries, water, food & beverage, refining & petrochemical, space, and sustainable energy (hydrogen and fuel cells) — through a B2B sales-led model combining direct enterprise sales (UK, US, India) with a global distributor network. Revenue is generated almost entirely from hardware sales of filtration and separation products, with quote-based B2B pricing and no disclosed subscription or SaaS component.

Revenue reached £194 million in the fiscal year ending November 2025, with H1 2026 revenue of £106.2 million representing 9% year-on-year growth. The company has actively accelerated its inorganic growth strategy, deploying £25 million across three acquisitions (Drache, GV Filtri, Carekem) in H1 2026 — roughly tripling its historical annual M&A spend — with the Drache deal marking its largest acquisition to date. Porvair maintains a net cash position of £22.9 million, has raised its dividend for 15 consecutive years, and carries a Deutsche Bank Buy rating with a 1,050 pence price target.

Name

Porvair

Legal name

Porvair Filtration Group Ltd

Website

https://porvairfiltration.com

Company type

Public

Founded year

1974

Operating status

Operating

Headcount range

501–1,000 employees

Short description

Porvair plc is a UK-headquartered specialist filtration and separation technology manufacturer serving aerospace, nuclear, pharmaceutical, semiconductor, and industrial process customers with proprietary sintered metal, polymer, and membrane filtration products across global markets.

Ownership category

akta.pro rank

Product category

Industrial Filtration & Separation Equipment

NAICS

Industrial and Commercial Fan and Blower and Air Purification Equipment Manufacturing (333413)

SIC

Industrial & Commercial Fans & Blowers & Air Purifing Equip (3564), Miscellaneous Plastics Products (3080)

akta.pro primary industry

Separation & Filtration Equipment (Filters, Centrifuges, Membranes) (IMAHAEAB)

Keywords

• Industrial filtration products
• Sintered metal fibre filters
• Membrane cartridge filters
• High purity gas filters
• Nuclear filtration systems

Headquarters

HQ city

King's Lynn

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Operations, Personnel, Supply Chain, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Filtration Products Sales: Porvair generates revenue through the design, manufacture, and sale of filtration and separation products across multiple industry segments including aerospace, nuclear, pharmaceutical, microelectronics, food & beverage, and industrial process sectors. Products include metallic cleanable filters, disposable filter elements, membrane filters, and custom engineered solutions.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

Porvair designs and manufactures specialist filtration and separation products — including sintered metal fibre and powder filters (Sinterflo®), porous plastics (Vyon®), polymeric membrane cartridges (Biofil™, Fluorofil™, Hydrofil™, Aquafil™) and ultra-high purity gas filters (GasPro™) — for industrial customers in aerospace & defence, nuclear, bio-pharmaceutical, microelectronics, food & beverage, water, and refining/petrochemical markets. The company also provides custom engineered filtration solutions for mission-critical applications such as nuclear containment venting, aircraft fuel tank inerting and semiconductor gas lines.

Product overview

Porvair Filtration Group is a specialist filtration and separation manufacturing company offering a comprehensive portfolio of filtration products across multiple categories. The portfolio includes metallic and cleanable filters (Sinterflo® F, P, M, MC series), disposable filter elements (membrane filters including Biofil™, Fluorofil™, Hydrofil™, Aquafil™; pre-filters including Polyfil™, Microfil™, Tekfil™, Carbofil™), high purity gas filters (GasPro™ series), porous materials and components (Vyon® sintered plastics, spargers, flow restrictors), nuclear-specific filtration systems, aerospace filtration assemblies, and specialty products (Atephos® mist eliminators). Products serve industries including aerospace and defence, pharmaceutical and biotechnology, nuclear, microelectronics and semiconductor manufacturing, food and beverage, water treatment, printing, and industrial process applications. The company operates across UK, US, Netherlands, India, and China with manufacturing capabilities supporting both standard product lines and custom engineered solutions.

Differentiator

Problem solved

Functional benefit

Brands

• Sinterflo: Sintered metal fibre, metal powder, and metal mesh filter products
• Vyon
• Biofil
• GasPro
• NuKey
• Rempak

Products and services

• Sinterflo® F Sintered Metal Fibre Filters Sinter-bonded random metal fibre filter medium providing uniform high porosity, low pressure drop, high permeability and dirt holding capacity. Pleatable for increased filtration area and cleanable in-situ. Designed for industrial buyers in aerospace, nuclear, chemical and process filtration.
• Sinterflo® P Sintered Metal Powder Filters High temperature and corrosion resistant sintered metal powder filter medium used in filter elements and cartridges for industrial applications requiring durability in harsh environments.
• Sinterflo® M Metal Mesh Filters Sintered metal mesh filter medium for various industrial process filtration applications.
• Sinterflo® MC Sintered Metal Composite Filters Composite metal filter medium combining multiple filtration layers for enhanced performance in demanding applications.
• Metal Filter Elements and Cartridges Cleanable metallic filter cartridges and elements with fully welded design for harsh operating environments, high temperatures, and aggressive conditions.
• Candle Filters for the Polymer Melt Industry Candle-style filter elements specifically designed for polymer melt filtration applications in industrial processing.
• Rempak™ Candle Filters Proprietary candle filter design for polymer melt industry applications with enhanced filtration performance.
• Aquafil™ Polyethersulphone Membrane Cartridge Filters Single layer polyethersulphone membrane cartridge filters for pharmaceutical and biotechnology applications requiring high purity filtration.
• Biofil™ Polyethersulphone Membrane Cartridge Filters Polyethersulphone membrane cartridge filters (Biofil 1, Biofil 2, Biofil Plus) for sterile liquid filtration and bioburden control in pharmaceutical manufacturing.
• Fluorofil™ ePTFE Membrane Cartridge Filters ePTFE membrane cartridge filters including Fluorofil Plus high flow sterile gas filters and Fluorofil F100 PTFE membrane filters for solvent filtration.
• Hydrofil™ Nylon 6.6 Membrane Filters Nylon 6.6 membrane filters including single layer and dual layer (Hydrofil Plus) configurations for pharmaceutical filtration applications.
• Teffil™ PTFE Membrane Filters Superior PTFE membrane filters including Teffil and Teffil HF variants for demanding chemical and pharmaceutical filtration.
• Carbofil™ Active Carbon Filters Active carbon filter cartridges for removal of organic contaminants and chlorine from process fluids.
• Klearfil™ Absolute Rated Pleated Depth Filters Absolute rated pleated depth filters with high dirt holding capacity for industrial process applications.
• Microfil™ Glass Fibre Cartridge Filters Absolute rated pleated glass fibre cartridge filters for high-efficiency particulate filtration.
• Polyfil™ Polypropylene Cartridge Filters Absolute rated pleated polypropylene cartridge filters for general industrial filtration applications.
• Tekfil™ Polypropylene Depth Filter Cartridges Polypropylene depth filter cartridges including standard and HV (high volume) variants for industrial process filtration.
• GasPro™ In-Line Gas Filters High purity in-line gas filters for semiconductor and microelectronics manufacturing environments.
• GasPro™ TEM Series Filters High purity gas filters specifically designed for semiconductor manufacturing with extensive flow rate and gas compatibility specifications.
• Vyon® Sintered Porous Plastics Sintered porous plastic materials used for aeration, diffusion, sparging, fluidisation, and filtration applications.
• Vyon® Disc and Tubular Diffusers Disposable diffused aeration units including disc and tubular diffusers for efficient gas dispersion in liquid applications.
• Sanitary Capsule Filters Sanitary capsule filters designed for food, beverage, and pharmaceutical applications requiring sterile filtration.
• HEPA Filtration Systems High Efficiency Particulate Air (HEPA) filtration systems for critical air quality applications in aerospace, nuclear, and pharmaceutical sectors.
• Pulsed Jet Self-Cleaning Air and Gas Filters Self-cleaning filter systems using pulsed jet technology for continuous operation in industrial air and gas applications.
• Nuclear Vent Breathers Specialized vent breather filters for nuclear applications including filtered containment venting systems.
• Automated Liquid Filtration Systems Automated liquid filtration systems for nuclear processing and fuel production applications.
• Crossflow Filtration Systems Crossflow membrane filtration systems for nuclear waste processing and liquid separation applications.
• NuKey™ Nuclear Grade Disposable Filter Elements Nuclear-qualified disposable filter elements meeting stringent regulatory requirements for nuclear facility filtration.
• Fuel Tank Inerting Filters Specialized filters for aircraft fuel tank inerting systems that prevent combustion in fuel vapour spaces.
• Differential Pressure Indicators (DPIs) Filter monitoring devices for aerospace applications that indicate when filter elements require replacement.
• High Purity Chemical Filters Specialized filters for high-purity chemical processing in semiconductor and pharmaceutical manufacturing.
• Atephos® Mist Eliminators Mist eliminator technology for removal of liquid droplets from gas streams in industrial process applications.
• Battery Vents and Flame Arrestors Safety vents for battery enclosures and flame arrestor elements using porous materials for pressure equalisation.

Quantifiable outcome

• H1 2026: Revenue £106.2m (+9% YoY), adjusted operating profit £13.8m (+10% YoY)
• +2 more outcomes

Segments10 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Partnerships

Three partnerships are on record, tiered core and minor.

• DrachecoreStrategic or Co-development Partner · 1 January 2026Acquisition completed in January 2026 for €20.5 million. Largest deal in Porvair's acquisition history, expanding European presence within the metal melt quality division. Integration proceeding ahead of expectations with acquired business already achieving divisional margin targets within 4.5 months of ownership.
• GV FiltricoreStrategic or Co-development Partner · 1 January 2026Acquisition valued at €6.7 million as part of the £25m M&A push in H1 2026. Agreed to acquire as part of strategic expansion.
• CarekemminorStrategic or Co-development Partner · 1 January 2026Acquisition completed for approximately £1 million as part of the three acquisitions totaling £25 million in H1 2026.

Scale indicators9 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Entegris: Specialty materials and filtration supplier to semiconductor and microelectronics manufacturers. Directly comparable to Porvair's GasPro™ high-purity gas filtration business serving advanced-node fabs.
• MANN+HUMMEL: Privately held German filtration specialist serving automotive, industrial, and life-sciences markets. Highly comparable to Porvair's sintered media and membrane filter product lines and its European industrial customer base.
• Donaldson Company: Global manufacturer of filtration systems across industrial, aerospace, and process markets. Closest direct comparable to Porvair in terms of B2B industrial filtration breadth, aerospace exposure, and recurring replacement filter revenue model.
• Sartorius: German bioprocessing supplier offering filtration and fluid management for pharmaceutical manufacturing. Closely comparable to Porvair's Biofil™ and Fluorofil™ sterile filtration offerings in biopharma.
• SPX Flow: Specialty industrial flow and filtration equipment maker. Comparable mid-scale industrial filtration peer to Porvair with similar exposure to process industries and custom engineered solutions.

Broad incumbents

• Alfa Laval: Swedish industrial separation and heat-transfer major. Comparable to Porvair's industrial process filtration and metal melt filtration (post-Drache) businesses, though operating at significantly larger scale and broader scope.
• Pall Corporation (Danaher): Large diversified filtration platform within Danaher's Life Sciences and Diagnostics segments. Overlaps directly with Porvair's biopharmaceutical and microelectronics filtration offerings, but at much greater scale and breadth.
• GEA Group: German engineering group with strong separation and filtration technology. Comparable in industrial process and food/beverage filtration segments that overlap with Porvair's process industries and F&B customer base.
• Parker Hannifin: Diversified motion and control technologies group with aerospace and industrial filtration exposure. Comparable to Porvair's aerospace hydraulics/fuel/lubrication filtration portfolio but within a much broader product portfolio.
• Merck KGaA (MilliporeSigma Life Science): Life Science division of Merck KGaA offering filtration and bioprocessing consumables. Comparable to Porvair's pharmaceutical membrane filter business, though serving customers at much greater global scale.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/embed/4FvigwzvHIk
• LinkedInlinkedin.com/company/porvair-filtration-group

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A11 records

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Porvair