SULT

What SULT does

SULT GmbH - Staub- und Lufttechnik, headquartered in Nufringen near Stuttgart, Germany, is a privately held industrial manufacturer founded in 1993 that designs and builds custom cartridge filtration systems and room air systems for hazardous dust and fume extraction. Its core portfolio spans compact units up to 10,000 m³, modular systems up to 50,000 m³, high-vacuum containerized extraction systems, plus ATEX-certified explosion protection and fire detection packages. The technology stack rests on proprietary air-flow architecture, including a patented Push-Pull extraction method for welding fume capture and patents covering front-loading cartridge filters, targeted raw gas distribution, and variable air distribution; the company cites separation efficiency above 99.97% at 0.3 µm and centrifugal fan capacities up to 50,000 m³/h at 2,500 Pa. A proprietary line of ULTRA-TOP filter media variants extends the offering with ultra-fine synthetic, high-temperature (to 180°C), flame-retardant, durable polyester, and conductive/antistatic grades.

The firm serves metal processing as its primary segment, with additional exposure to pharmaceutical, chemical, food processing, stone/cement, plastics, recycling, and vocational training customers, addressing pain points such as worker exposure to hazardous dusts, regulatory compliance (TA Luft, ATEX, DGUV, TRGS), and dust-explosion risk in aluminum, titanium, and carbon-fiber processing. Notable reference customers include a German premium automobile manufacturer (sill production in Dettingen), an automotive supplier, the world's leading stainless steel producer, and a steel mill in Japan. Roughly half of all systems and accessories are now exported to over 40 countries across six continents.

Commercially, SULT operates an enterprise direct-sales model: the engineering team is engaged at the planning stage, models systems in 3D CAD, and oversees in-house manufacturing in Nufringen, in-house installation, and captive long-term maintenance. Revenue is generated through one-time equipment sales, recurring maintenance and service contracts that the firm deliberately refuses to outsource, and wear-and-spare-parts supply. Pricing is quote-based and not publicly disclosed. The company is privately held, managed by founder/owning family (Managing Director Harald Schlosser), with 11-50 employees and no external PE/VC ownership documented.

Name

SULT

Legal name

SULT GmbH – Staub- und Lufttechnik

Website

https://sult.de

Company type

Private

Founded year

1993

Operating status

Operating

Headcount range

11–50 employees

Short description

SULT GmbH manufactures custom industrial cartridge filtration and room air systems for dust extraction, welding fume capture, and explosion protection. The German firm serves metal processing, pharmaceutical, chemical, food, and vocational school customers across 40+ countries.

Ownership category

akta.pro rank

Product category

Industrial Filtration Systems

NAICS

Industrial and Commercial Fan and Blower and Air Purification Equipment Manufacturing (333413), Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (3334)

SIC

Industrial & Commercial Fans & Blowers & Air Purifing Equip (3564)

akta.pro primary industry

Dust Collection & Air Filtration Equipment (Industrial) (IMAHALAF)

akta.pro secondary industries

Air Quality & Filtration Equipment (IAQ) (IMAHAKAI), Industrial Vacuum Systems (Wet/Dry, Dust Extraction) (IMAHALAC), Emission Control & Scrubbing Equipment (Scrubbers, Dust Collectors, Catalytic Systems) (IMAHAEAK)

Keywords

• Industrial air filtration
• Dust extraction systems
• Welding fume extraction
• Explosion protection ATEX
• Filter media manufacturing

Headquarters

HQ city

Nufringen

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Industrial Filtration Equipment Sales: Sale of custom-built filtration systems, room air systems, and extraction equipment. Systems range from compact units (up to 10,000 m3) to modular systems (up to 50,000 m3) and high-vacuum extraction systems in containers. Customers include plant manufacturers, automotive suppliers, chemical/pharmaceutical companies, and schools.
2. Maintenance and Service Contracts: Ongoing maintenance services including regular servicing, filter media replacement, and technical support. The company emphasizes that they do not hand over maintenance of their systems, keeping it in-house for quality assurance.
3. Wear and Spare Parts: Sale of replacement filters, wear parts, and accessories for SULT systems. The company maintains comprehensive inventory and can manufacture custom spare parts.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

SULT designs, manufactures, and installs custom-engineered industrial filtration and room air systems for dry dust applications, including cartridge filter systems, welding fume extraction (Push-Pull), and ATEX-certified explosion protection solutions. The company produces all equipment in-house at its Nufringen, Germany facility and provides ongoing maintenance and spare parts service worldwide.

Differentiator

Problem solved

Functional benefit

Brands

• ULTRA-TOP: High quality filter media with ultra-fine synthetic fibers for surface dust filtration
• ULTRA-TOP KV
• ULTRA-TOP FR
• ULTRA-TOP SB
• ULTRA-TOP SB-AL-AS
• ULTRA-TOP SB-AL-PTC-AS

Products and services

• Filteranlagen (Filter Systems) Industrial cartridge filter systems for dry dust extraction in manufacturing environments, available in compact, modular, and high-vacuum container configurations. Targeted at industrial companies, automotive suppliers, chemical/pharmaceutical firms, and vocational schools.
• Raumluftsysteme (Room Air Systems) Room air systems for clean, productive working environments in industrial workplaces, providing ambient air quality management alongside point-source extraction.
• Spezialfilteranlagen (Special Filter Systems) Specialized filter systems engineered for specific industrial applications with unique filtration requirements that exceed standard configurations.
• Explosionsschutz / ATEX Systems ATEX-certified explosion protection systems designed for industrial environments handling combustible dusts, including aluminum, titanium, and carbon fiber processing.
• Brandschutz für Filteranlagen (Fire Protection for Filter Systems) Fire detection and suppression systems integrated with industrial filter installations to protect equipment and facilities from fire hazards.
• Anlagenzubehör (System Accessories) Complete accessory portfolio for filter systems, including extraction arms, hoods and tables, extraction and soundproofing cabins, and ducting components.
• ULTRA-TOP Filter Media SULT's proprietary brand of high-quality filter media, with variants including ultra-fine synthetic fibers for surface dust filtration, temperature-resistant media up to 180°C, flame retardant media, durable polyester media, and conductive antistatic media with Teflon membrane options.
• Verschleiß- und Ersatzteile (Wear and Spare Parts) Replacement filters, wear parts, and accessories for SULT systems, with comprehensive inventory and custom spare parts manufacturing capability.
• Wartung und Serviceverträge (Maintenance and Service Contracts) Ongoing maintenance services including regular servicing, filter media replacement, and technical support, kept in-house by SULT rather than handed to third parties to ensure quality assurance.

Quantifiable outcome

• Separation efficiency > 99.97% at 0.3 µm particle size
• +2 more outcomes

Named customers4 records

Segments8 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Scale indicators4 records

Recent moves5 records

Expansion highlights6 records

Direct peers

• Imperial Systems: North American designer and manufacturer of industrial dust collection and fume extraction systems. Comparable mid-sized player to SULT in custom-engineered dust collection for metal processing and welding applications.
• AAF (American Air Filter / Flanders): Global manufacturer of air filtration products including industrial dust collectors and fume extraction systems. Comparable to SULT in industrial cartridge filtration technology and multinational manufacturing footprint, though at significantly larger scale.
• Keller Lufttechnik: German engineering-led manufacturer of industrial dust extraction and exhaust air purification systems. Direct German Mittelstand competitor with comparable focus on custom-engineered filtration for metal processing, foundry, and similar heavy-industry customers.
• Nederman: Swedish global leader in industrial air filtration, dust and fume extraction, and workplace air quality — the most direct comparable to SULT in product range (cartridge filtration, welding fume extraction), customer base (metal processing, automotive), and engineered-solutions go-to-market.
• Donaldson Company: US-based global manufacturer of industrial filtration systems including dust collection, fume extraction, and cartridge filters under brands such as Torit and DCE. Directly comparable in industrial dust/fume extraction technology and large enterprise customer base.
• RoboVent: US-based manufacturer of industrial dust and fume collection systems serving metalworking, welding, and manufacturing customers. Closely comparable to SULT in product (cartridge collectors, welding fume extraction) and target end-markets.
• BWF Envirotec: German-headquartered specialist in industrial dust collection filtration systems and filter media. Overlapping product range with SULT (cartridge filters, dust collectors) and similar focus on heavy-industry applications across Europe and internationally.

Broad incumbents

• Mann+Hummel: German global filtration leader with broad industrial and automotive filtration portfolio. Overlaps with SULT in industrial air filtration and dust collection, but operates at much larger scale across many product lines beyond dust extraction.
• Camfil: Swedish global air filtration specialist serving cleanroom, HVAC, and industrial dust collection. Comparable in industrial air filtration, dust collection, and air quality regulation expertise, though broader in scope than SULT's dust-and-fume niche.
• Atlas Copco (Industrial Air division): Swedish multinational with a broad industrial air portfolio including compressors, blowers, and increasingly air treatment and dust collection. Overlaps with SULT in industrial air handling and filtration, though dust collection is one of many divisions within a much larger group.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks7 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/@SultGmbH
• LinkedInlinkedin.com/company/sult

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 records

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 SULT