Dietmar Kaiser AG

What Dietmar Kaiser AG does

Dietmar Kaiser AG is a Liechtenstein-based, family-owned manufacturer of custom environmental vehicles and mineral oil tank vehicles, founded in 2003 by Dietmar J. Kaiser and headquartered in a purpose-built facility in Schaanwald (operational since January 2019). The company designs and produces sewer cleaning and recycling vehicles (DYNA Combi, DIAMO Combi, DEFCO series, URBAN Combi, 7.5 t and 12 t Combis), tank vehicles (airfield refuellers, tank trailers, semitrailers, conversions on MAN/SCANIA/Mercedes), street sweepers (TK series via the integrated Kehrtec AG), and a portfolio of proprietary components and accessories — notably patented Power Pack and Vac Pack suction-purge units, HPT high-pressure pumps, VPC ATEX vacuum pumps, water recycling systems, hose reels, and a 30 micron sand filter.

The business operates a custom-build hardware sales model complemented by services: vehicles are engineered to individual customer specifications with pricing undisclosed, while SDR-certified calibration, ADR/SDR inspections, AdBlue calibration, custom development, and personnel training (including a publicly priced DEFCO course at 340 CHF) form a recurring services layer. Go-to-market combines direct sales from headquarters, authorized representatives (e.g., Pro Jetting/Jaap Verkaik in the Netherlands), and a Swiss service center in Root. Customers span municipalities and government (Berlin Municipal Services, Swiss cantonal roads office), private sewer cleaning and recycling operators, petroleum and chemical transport firms (Osterwalder, Hartmann), industrial service companies, and aviation.

The company is led by the founder alongside his sons Philipp J. Kaiser (international services and sales) and Samuel D. Kaiser (local services and production), with no external institutional investors disclosed. Operations span Europe, China, Japan, India, South Africa, the United States, and Australia, with sustained presence at IFAT Munich and other industry trade shows. In 2026 the firm divested its Krieger Nutzfahrzeuge AG Swiss subsidiary to new ownership while retaining Root as a service center, and integrated Kehrtec AG to broaden its street sweeper product line.

Name

Dietmar Kaiser AG

Legal name

Dietmar Kaiser AG

Website

https://dietmarkaiser.com

Company type

Private

Founded year

2003

Operating status

Operating

Headcount range

1–10 employees

Short description

Dietmar Kaiser AG is a Liechtenstein-based, family-owned manufacturer of custom environmental and mineral oil tank vehicles, sewer cleaning systems, street sweepers, and proprietary components (Power Pack, Vac Pack), serving municipalities, petroleum/chemical operators, and industrial service firms across Europe, Asia, Africa, the Americas, and Oceania.

Ownership category

akta.pro rank

Product category

Specialty Environmental and Mineral Oil Vehicles

akta.pro primary industry

Track Renewal, Rehabilitation & Maintenance Works (IMAFAFAI)

akta.pro secondary industry

Municipal & Public Works Specialty Vehicles (Street Sweepers, Sewer Jetters) (IMAHAIAI)

Keywords

• Sewer cleaning vehicles
• Environmental vehicles
• Mineral oil tankers
• Tank trailers
• Street sweepers

Headquarters

HQ city

Schaanwald

HQ country

Liechtenstein

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Custom Environmental Vehicles: Design and manufacture of custom environmental vehicles including sewer cleaning vehicles (DEFCO, DYNA, DIAMO, URBAN series), tank vehicles, and suction vehicles based on individual customer specifications
2. Vehicle Components: Sale of proprietary components including Power Pack, Vac Pack, HPT high pressure pumps, VPC vacuum pumps, water recycling systems, hose reels, and accessories for mobile and industrial use
3. Service, Maintenance & Calibration: SDR specialist and repair services for mineral oil tank vehicles, S&D tanks and construction site tanks including ADR/SDR inspections, calibration, and maintenance services
4. Custom Development: Individual development of special vehicles tailored to customer specific needs and requirements
5. Training Services: Staff training services for vehicle operation, application and maintenance
6. Used Vehicles & Storage Units: Sale of pre-owned environmental vehicles, tankers and accessories from stock

Pricing tiers

Go-to-market motion3 records

Distribution channels4 records

Marketing channels11 records

Core offering

Dietmar Kaiser AG designs, engineers and manufactures custom environmental and mineral oil tank vehicles—including sewer cleaning Combis (DYNA, DIAMO, DEFCO, URBAN, 7.5t/12t), suction and jetting vehicles, hydro-excavation units, street sweepers (TK series, TK-Unimog), tank trailers, semitrailers and airfield refueling vehicles—along with proprietary components such as the patented Power Pack and Vac Pack, HPT high-pressure pumps, VPC ATEX vacuum pumps, and water recycling systems. It sells directly and through regional representatives to municipalities, industrial service companies, petroleum/chemical operators and aviation customers across Europe and selected international markets, supported by maintenance, SDR calibration, ADR/SDR inspection and training services.

Product overview

Dietmar Kaiser AG is a Liechtenstein-based manufacturer of specialty environmental and mineral oil vehicles, components, and services. Its product portfolio spans five interconnected categories: (1) Environmental Vehicles — a broad range of sewer cleaning and suction vehicles including the DYNA Combi (with Power Pack water recycling), DIAMO Combi, DEFCO series (4×4, 6.0 t, 3.5 t), 7.5 t Combi, 12 t Combi, URBAN Combi, toilet service units, TV jetting units, and special/custom units; (2) Suction & Jetting Equipment — including Dyna Sauger for chemical transport, jetting trucks, suction vehicles, hydro-excavation units, and ROM jetting trailers; (3) Street Sweepers — the TK series (TK 9000, TK 7000, TK 6000) and TK-Unimog series with rapid-change attachment systems; (4) Tank Vehicles — airfield refuelling vehicles, tank trailers, tank semitrailers, and tank conversions on major chassis (MAN, SCANIA, Mercedes); and (5) Components & Accessories — HPT high-pressure pumps, VPC ATEX vacuum pumps, patented Power Pack and Vac Pack, WRG water recycling, cassette boom, street washing bar, hose reels (D25/D32), MiniFlex inspection camera, e-Steamer smoke generator, spinning ball cutter, nozzles, and hoses. These products are supported by a full suite of services including maintenance/repair, SDR calibration, ADR inspections, custom development, and personnel training. The company sells globally across Europe, China, Japan, India, South Africa, America, and Australia.

Differentiator

Problem solved

Functional benefit

Products and services

• DYNA Combi sewer cleaning and recycling vehicle

Quantifiable outcome

• Low vehicle height as low as 1.85m for underground garage and overbuilding access
• +2 more outcomes

Named customers10 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature10 records

Partnerships

Five partnerships are on record, tiered core and minor.

• Krieger Nutzfahrzeuge AGcoreStrategic or Co-development Partner · 1 February 2026Krieger Nutzfahrzeuge AG in Root, Switzerland was successfully managed by Dietmar Kaiser AG for 8 years until ownership transfer on 01.02.2026. Root continues as a service center for Dietmar Kaiser AG products. New ownership by Leo Amstad and Anita Schnyder with expansion of hydraulic hose service and Amstad Service GmbH integration.
• Pro Jetting (Jaap Verkaik)coreChannel Partner/ Reseller/ DistributorPro Jetting from Poeldijk serves as authorized sales representative for Dietmar Kaiser AG products in the Netherlands. Jaap Verkaik received multi-day product training and represents the company for customer relations in the Dutch market.
• Vandervalk+DegrootcoreChannel Partner/ Reseller/ DistributorLong-term Dutch customer with contract signed at IFAT 2022. Multiple vehicle orders including sewer cleaning and recycling equipment. Relationship characterized by excellent cooperation and trust.
• Goldbeck Rhomber GmbHminorStrategic or Co-development PartnerGeneral contractor responsible for construction of Dietmar Kaiser AG headquarters building in Schaanwald completed in 2018-2019.
• Amstad Service GmbHminorStrategic or Co-development PartnerAmstad Service GmbH joins the Root location in same building, expanding service offerings at the Swiss service center following Krieger Nutzfahrzeuge AG ownership change.

Scale indicators8 records

Recent moves7 records

Expansion highlights6 records

Broad incumbents

• Faun Umwelttechnik (Kirchhoff Group): German manufacturer of environmental service vehicles, including refuse collection and sewer cleaning vehicles. Competes with Dietmar Kaiser AG in the environmental vehicle category but as part of a much larger municipal fleet portfolio.
• Aebi Schmidt Group: Large European manufacturer of street sweepers, winter service equipment, and municipal vehicles. Comparable in sweeper category to Dietmar Kaiser AG's TK series, but with much broader product breadth and global service network.
• Kärcher: Global cleaning equipment manufacturer with municipal and industrial cleaning product lines. Overlaps with Dietmar Kaiser AG's high-pressure jetting, sewer cleaning, and accessory categories as an adjacent incumbent.
• Bucher Municipal: Swiss-headquartered global leader in municipal vehicles, street sweepers, and winter maintenance equipment. Overlaps with Dietmar Kaiser AG's TK sweeper and Combi lines but at significantly larger scale and broader portfolio.
• Dulevo International S.p.A. Italian manufacturer of street sweepers and industrial cleaning vehicles with global distribution. Comparable in street sweeper and municipal cleaning equipment to Dietmar Kaiser AG's TK series.

Direct peers

• Wiedenmann GmbH: German manufacturer of municipal vehicles, sweepers, and tool carriers for road and green-area maintenance. Comparable to Dietmar Kaiser AG's TK street sweeper line and municipal environmental vehicle focus.
• Müller Umwelttechnik GmbH & Co. KG: German niche manufacturer of sewer cleaning and combination vehicles for municipal and industrial customers. Directly comparable to Dietmar Kaiser AG's DYNA/DIAMO Combi lines in product, customer base (municipalities, contractors), and business model of custom-built specialty chassis.
• Kroll Fahrzeugbau GmbH: German specialty vehicle body manufacturer building custom superstructures on commercial chassis. Comparable to Dietmar Kaiser AG's custom-development model for tank vehicles and environmental superstructures on MAN/DAF/Scania chassis.
• KEG Kanal-Eder GmbH: German manufacturer of sewer cleaning vehicles and equipment for municipal and industrial users. Closely comparable to Dietmar Kaiser AG's core DEFCO and Combi product family in segment, customer base, and build philosophy.
• RSP GmbH: German specialist in high-pressure water jetting and industrial/suction vehicle technology. Overlaps with Dietmar Kaiser AG's jetting trucks, hydro-excavation suction vehicles, and HPT high-pressure pump product lines.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

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Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Subsidiaries2 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 Dietmar Kaiser AG