Porous Metal Filters

What Porous Metal Filters does

Porous Metal Filters, Inc. (PMF) is a Spring, Texas–based, privately held manufacturer of diffusion-bonded (sintered) porous metal filtration media, operating as the U.S. division of the Dorstener Group of Companies, a German wire and wire mesh conglomerate with over a century of operating history. Founded in 2008, the company produces SinterPore®-branded single layer sintered (SLS), multi-layer sintered (MLS), and custom layer sintered (CLS) media in standard stainless steels (304, 304L, 316, 316L) and custom alloys (Hastelloy C-22/276, Monel, Inconel 600/625, Alloy 20), serving 20+ industrial verticals including aerospace & defense, automotive, oil & gas, pharmaceutical, chemical processing, power generation, chromatography, and renewable energy. Its portfolio spans 19+ specialized products — sintered wire cloth laminates, metallic fiber felt laminates, filter cartridges, sand control screens, aerospace filters, ballast water filters, spargers, chromatography frits, demineralizer filters, hot gas filters, fluidizing media, and hydrogen membrane supports — supported by in-house manufacturing capabilities (sintering, laser cutting, welding, stamping, rolling, cleaning, annealing, calendering) and lab testing services (tensile, Strauss, material ID, permeability).

PMF runs a sales-led, direct-only go-to-market: quote-based pricing with no public list rates, web-based RFQ submission, a toll-free sales line, field sales, Net 30 terms, and blanket/stocking programs that hold up to 12 months of inventory for qualified customers. Revenue is generated through one-time custom orders and repeat procurement under those stocking agreements, primarily to enterprise OEMs, filter manufacturers, and industrial end-users. The company holds ISO 9001:2015 certification (valid through February 2029) and states compliance with DIN, ASTM, ISO, DFAR, and military standards, supporting qualification into regulated aerospace, defense, and nuclear supply chains. Distribution is global in scope through Dorstener Group's production facilities in Europe, North and South America, and Asia, though the Spring, TX site is the company's only directly identified physical location.

Name

Porous Metal Filters

Legal name

Porous Metal Filters, Inc.

Website

https://pmfilter.net

Company type

Private

Founded year

2008

Operating status

Operating

Headcount range

51–100 employees

Ownership category

akta.pro rank

Product category

Industrial Filtration Products

akta.pro primary industry

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

akta.pro secondary industry

Purification, Filtration & Packaging for High-Purity Chemicals (PFA/UPW compatibility, subfab delivery) (IMAEAKAO)

Keywords

• Sintered metal filters
• Porous metal media
• Industrial filtration products
• Diffusion bonded mesh
• Metallic filter cartridges

Headquarters

HQ city

Spring

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Custom Porous Metal Filtration Products: PMF manufactures custom and standard sintered metal filters, filter cartridges, filter plates, sand screens, chromatography frits, spargers, and other filtration media. Products are sold directly to industrial customers across aerospace, oil & gas, pharmaceutical, chemical processing, and power generation sectors. Revenue is generated through one-time product sales and repeat orders, including blanket/stocking programs for ongoing inventory replenishment. No public pricing is disclosed; all sales are quote-driven.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels5 records

Core offering

Porous Metal Filters (PMF) manufactures custom and standard diffusion-bonded (sintered) porous metal filter media and finished filtration products under the SINTERPORE® brand. Products include sintered wire cloth laminates, sintered metallic fiber felt laminates, filter cartridges, sand control screens, spargers, chromatography frits, and specialized filters for aerospace, oil & gas, pharmaceutical, chemical processing, and power generation applications. Materials include 304/304L/316/316L stainless steel and custom alloys such as Hastelloy, Monel, and Inconel.

Product overview

Porous Metal Filters (PMF) offers a comprehensive portfolio of filtration and separation products under the SINTERPORE® brand. The core product line consists of diffusion-bonded (sintered) porous metal materials available in three configurations: single layer sintered (SLS), multi-layer sintered (MLS), and custom layer sintered (CLS). These include Sintered Wire Cloth Laminates, Sintered Metallic Fiber Felt Laminates, Industrial Metallic Filter Cartridges, and Sand Control Screens. PMF also provides 19 specialized filtration products including Aerospace Filters, Ballast Water Filters, Chemical & Industrial Spargers, Chromatography Frits, Demineralizer Filters, Flame/Spark Arrestors, Flood Filters, Fluidizing Media, Gasification Filters, Hot Gas Filters, Irrigation Filters, Metallic Membrane Support for Hydrogen, Nutsche Filters, Porous Metal Plate, and Temporary Strainers & Baskets. Standard materials include 304, 304L, 316, and 316L stainless steel, with custom alloys such as Alloy 20, Hastelloy, Monel, and Inconel available upon request. The products serve industrial filtration, separation, flow control, noise reduction, and powder fluidization applications across aerospace, automotive, chemical, pharmaceutical, oil & gas, and power generation industries.

Differentiator

Problem solved

Functional benefit

Brands

• SINTERPORE®: Diffusion bonded (sintered) porous metal filtration materials including single layer sintered (SLS), multi-layer sintered (MLS), and custom layer sintered (CLS) filter media options.

Products and services

• Sintered Wire Cloth Laminates Multi-layered stainless steel woven wire cloth that is sintered together for superior strength and durability, offering heat and wear resistance with easy cleaning and reuse capabilities. Used across aerospace, oil & gas, chemical processing, and industrial filtration applications.
• Sintered Metallic Fiber Felt Laminates Filter media made from stainless steel fibers that lap through each other, featuring high porosity, even distribution, high dirt-holding capacity, and shape moldability for welding. Used in automotive, food & beverage, and oil & gas industries.
• Industrial Metallic Filter Cartridges
• Sand Control Screens Sand screens used in oil and natural gas drilling to filter out sand and fine particles while allowing oil and gas to flow through, protecting completion and production equipment.
• Aerospace Filters
• Ballast Water Filters Metallic filters from woven wire mesh, perforated metal and metallic fibers for ballast water filtration using diffusion bonding (sintering) process, available in 316L, 904L, and super duplex alloys.
• Chemical & Industrial Spargers Industrial spargers for gas dispersion in petrochemical, pharmaceutical, water treatment, and food and beverage production applications.
• Chromatography Frits Pressed and sintered porous metal frits for liquid chromatography columns that filter microbial and inorganic contaminants, protecting HPLC columns and distributing samples evenly. Withstand up to 6000 psi and highly corrosive applications.
• Demineralizer Filters Filters for ion exchange and demineralization processes in water treatment applications, used in nuclear and conventional power generation.
• Flame/Spark Arrestors Filtration elements designed to prevent flame and spark propagation in industrial applications.
• Flood Filters Filters designed for flood management and water control applications.
• Fluidizing Media Hi-Perm and Lo-Perm media for fluidizing materials, enabling powder aeration, eliminating arching or bridging of powders in hoppers, and facilitating gas-solids interaction.
• Gasification Filters Metallic filter elements designed for high-temperature and high-pressure syngas filtration in coal or petroleum coke gasification processes.
• Hot Gas Filters Woven wire mesh and welded wire products for hot gas filtration applications including biofuel processing, power generation, spark arresting, and catalyst recovery.
• Irrigation Filters Sintered and non-sintered filter elements for commercial irrigation systems, available in 316L stainless steel with micron ratings from 5 to 1500.
• Metallic Membrane Support for Hydrogen Metallic membrane support structures for hydrogen production, purification, and fuel cell applications.
• Nutsche Filters Filters for Nutsche (pressure) filtration systems used in chemical processing applications.
• Porous Metal Plate Diffusion-bonded porous metal plates for filtration and separation applications, available in various alloys and micron ratings.
• Temporary Strainers & Baskets Temporary filtration strainers and baskets used in industrial applications to protect equipment from particulate contamination during commissioning, startup, and maintenance operations.

Quantifiable outcome

• Filtration consistency and extended run times reduce downtime and operating costs in power generation applications
• +3 more outcomes

Segments8 records

Ideal customer profiles6 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Two partnerships are on record, tiered minor.

• American Filtration & Separations Society (AFS)minorOthersPMF is affiliated with the American Filtration & Separations Society, a technical educational nonprofit organization founded in 1987 that provides a forum for exchange of information among engineers, scientists, and technologists in fluid/particle separation fields.
• The American Wire Cloth Institute (AWCI)minorOthersPMF is affiliated with The American Wire Cloth Institute, founded in 1933 by wire cloth producers to further good business practices and ensure a healthy future for the wire cloth industry.

Scale indicators3 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Bekaert: Bekaert is a global leader in steel wire transformation and metal fiber technologies, including sintered metal fiber media used in industrial filtration. Its filtration products and metal-fiber felt are directly comparable to PMF's Sintered Metallic Fiber Felt Laminates.
• GKN Powder Metallurgy (Hoeganaes): GKN Powder Metallurgy produces sintered metal components and porous metal products using related powder-metallurgy and sintering processes. It competes with PMF in industrial filtration and sintered porous structures, particularly for automotive and industrial applications.
• Mott Corporation: Mott is a leading US manufacturer of porous metal filtration and flow-control products (sintered metal media, filters, spargers). It is the closest direct competitor to PMF, sharing both the diffusion-bonded/sintered metal technology base and the same end markets in aerospace, oil & gas, chemical processing, and pharma.
• Porvair Filtration Group: Porvair designs and manufactures metal and metal-fiber filtration products for aerospace, energy, and industrial process markets. Its sintered metal filter range and customer base in aerospace and process industries directly overlap with PMF's core offerings.

Broad incumbents

• Donaldson Company: Donaldson is a global filtration company with industrial, aerospace, and gas-turbine product lines. It overlaps with PMF in aerospace filtration and industrial gas filtration, but its portfolio is dominated by non-metal media, with metal filtration as a smaller specialty.
• Entegris: Entegris supplies filtration, fluid handling, and materials solutions to semiconductor, life sciences, and industrial customers. Its advanced metal and membrane filters compete with PMF in chemical processing and high-purity applications, particularly where high-purity alloys are required.
• Parker Hannifin: Parker's Industrial Filtration division supplies hydraulic, lube, fuel, and process filtration to aerospace, oil & gas, and industrial OEMs worldwide. It overlaps with PMF on aerospace hydraulic filters and industrial process filtration, though filtration is one of many motion-and-control product lines.
• Pall Corporation (Danaher): Pall is a global industrial filtration leader offering metal and non-metal filtration solutions across aerospace, pharma, oil & gas, and chemical processing. As a Danaher division, it competes with PMF in aerospace hydraulic filtration, chemical processing, and pharma sterile filtration, but with a much broader portfolio.
• Eaton: Eaton's Filtration division serves aerospace, industrial, and process customers with hydraulic and industrial filtration products. It competes with PMF in aerospace hydraulic and lube filtration, but within a much broader electrical and industrial product portfolio.

Emerging players

• Hengko Technology: Hengko is a China-based manufacturer of sintered porous metal filters (stainless steel, bronze, Inconel) targeting medical, gas sensor, and industrial applications. It overlaps with PMF in sintered metal filter media but typically competes on price rather than extreme-pressure aerospace or nuclear applications.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/profile.php
• LinkedInlinkedin.com/company/dorstener-wire-tech-dwt-/about
• Xx.com/PMFfilters

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

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

M&A

Investments

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

Frequently asked questions about Porous Metal Filters