Gebr. Kemper

What Gebr. Kemper does

Gebr. Kemper GmbH + Co. KG is a privately held, family-owned German industrial manufacturer headquartered in Olpe, founded in 1864 and operating with 501–1,000 employees across three integrated divisions: Gebäudetechnik (Building Technology), Gusstechnik (Casting Technology) and Walzprodukte (Rolled Products). The Building Technology division produces valves, fittings, safety and pressure-regulation components, sampling valves, frost-proof outdoor valves and proprietary systems for drinking water hygiene (KHS), thermal management (KTS) and combined utility supply (TRESOR); the Casting Technology division supplies REACH- and RoHS-compliant lead-free gunmetal (Rotguss bleifrei) and multi-component bronze alloys; the Rolled Products division manufactures copper and copper-alloy strips and coils, including a proprietary KHP alloy series for electrical and industrial applications.

The company serves primarily professional plumbers, installers and building contractors through direct B2B sales, supplemented by an extensive seminar and training program (E, Z, AT, D, K and W series) delivered across at least ten German and Austrian cities, and offers the Dendrit STUDIO planning software as a specification-stage channel. Industrial manufacturing and electronics/electrical customers are served with foundry castings and rolled copper products. Geographic reach extends across Germany, Austria, Switzerland, the Czech Republic, Denmark, the Netherlands, Belgium, the UK and Ireland through localized websites and seminars, although Germany remains the core market. The revenue model is overwhelmingly hardware sales (valves, fittings, castings, copper coils) with a small, strategically important layer of professional training services; pricing is quote-based and not publicly disclosed. There are no disclosed funding rounds, M&A activity, public listings or external investors, consistent with a stable, family-controlled Mittelstand manufacturer whose competitive position rests on regulatory compliance, proprietary hydraulic-system engineering, vertically integrated metallurgy and a deep installer-education ecosystem rather than on software, AI or platform business models.

Name

Gebr. Kemper

Legal name

Gebr. Kemper GmbH + Co. KG

Website

https://kemper-olpe.de

Company type

Private

Founded year

1864

Operating status

Operating

Headcount range

501–1,000 employees

Short description

Gebr. Kemper is a German family-owned industrial manufacturer producing valves, fittings, and hygiene systems for drinking water installations, plus bronze castings and copper alloy rolled products, serving professional installers, industrial manufacturers, and the electrical industry across Europe.

Ownership category

akta.pro rank

Product category

Building Technology Products & Industrial Metal Components

NAICS

Metal Valve Manufacturing (33291), Industrial Valve Manufacturing (332911), Power Boiler and Heat Exchanger Manufacturing (332410)

SIC

Nonferrous Foundries (Castings) (3360), Industrial Instruments For Measurement, Display, And Control (3823)

akta.pro primary industry

Chillers, Boilers & Central Plant Operations (BPABACAG)

akta.pro secondary industry

Heat Transfer Equipment (Heat Exchangers, Boilers, Condensers) (IMAHAEAC)

Keywords

• Building technology valves
• Drinking water hygiene systems
• Copper rolled products
• Bronze foundry castings
• Industrial plumbing fittings

Headquarters

HQ city

Olpe

HQ country

Germany

HQ region

Europe

Offices6 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Building Technology Products: Sale of valves, fittings, and systems for building water installations including shut-off valves, safety valves, pressure reducers, filters, control valves, and measurement technology. Revenue generated through direct B2B sales to professional installers and contractors.
2. Foundry Casting Products: Production and sale of lead-free gun metal and multi-component bronze castings for industrial applications.
3. Rolled Copper Products: Manufacturing and sale of copper strips and copper alloy coils including specialized KHP alloy series.
4. Professional Seminars and Training: Technical seminars and training programs for building professionals on topics including drinking water hygiene, circulation systems, and installation best practices.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels5 records

Core offering

Gebr. Kemper GmbH + Co. KG manufactures and sells valves, fittings, and systems for building water installations (drinking water hygiene, thermal management, frost protection, measurement) under its Building Technology division. In parallel, the company produces lead-free gunmetal (Rotguss bleifrei), multi-component bronze castings, and copper/copper-alloy rolled products (including KHP series alloys) under its Foundry Casting and Rolled Products divisions, serving professional installers, building contractors, and industrial manufacturers.

Product overview

Gebr. Kemper operates three main business divisions: Building Technology (Gebäudetechnik), Casting Technology (Gusstechnik), and Rolled Products (Walzprodukte). The Building Technology division offers a comprehensive portfolio of valves and systems for drinking water hygiene, including Absperrarmaturen (shut-off valves), Sicherungsarmaturen (safety valves), Druckminderer und Filter (pressure reducers and filters), Regulierarmaturen (control valves), Messtechnik (measurement technology), Hygienesystem KHS, ThermoSystem KTS, FROSTI frost-proof outdoor valves, TRESOR supply stations, Probenahmeventile (sampling valves), and Unterputzarmaturen (wall-mounted valves). The division also includes smart solutions like FROSTI, MULTI-THERM PRO, and Systemcheck diagnostic tools, supported by Dendrit STUDIO planning software. The Casting Technology division produces lead-free gunmetal (Rotguss bleifrei) and multi-component bronze alloys (Rotguss Mehrstoffbronze) compliant with REACH and RoHS. The Rolled Products division manufactures copper and copper alloy strips/coils including standard grades (Cu-ETP, Cu-PHC, Cu-HCP, Cu-OF) and tin bronzes (CuSn4-CuSn10), plus proprietary KHP brand alloys (KHP102-KHP194) for specialized industrial applications.

Differentiator

Problem solved

Functional benefit

Brands

• KHS: KEMPER Hygienesystem KHS - Hygiene system for drinking water applications
• ThermoSystem KTS
• FROSTI
• MULTI-THERM PRO
• TRESOR
• Dendrit STUDIO
• KHP

Products and services

• Absperrarmaturen (Shut-off Valves) Shut-off valves designed for controlling and isolating water flow in building installations; sold to professional plumbers, installers, and building contractors.
• Sicherungsarmaturen (Safety Valves) Safety valves that protect building water systems from overpressure and maintain system integrity; sold to professional installers and contractors.
• Druckminderer und Filter (Pressure Reducers and Filters) Pressure reducers and filters for regulating water pressure and removing impurities from building water systems; sold to plumbing professionals.
• Regulierarmaturen (Control Valves) Control valves for adjusting and regulating water flow and pressure in building installations; sold to plumbing and building-services professionals.
• Messtechnik (Measurement Technology) Measurement instruments for monitoring flow, pressure, and temperature in building water systems; sold to professional installers and facility managers.
• Hygienesystem KHS (KEMPER Hygiene System) Proprietary integrated hygiene system for maintaining drinking water hygiene in building installations; sold to plumbing professionals and building operators concerned with Legionella and stagnant-water risks.
• ThermoTrenner (Thermal Separator) Thermal separator for preventing unwanted heat transfer in building water and heating installations; sold to professional installers.
• Unterputzarmaturen (Concealed Wall-Mounted Valves) Wall-mounted valves installed flush with walls for concealed water distribution in buildings; sold to professional installers and bathroom fitters.
• Wasserzähler-Montageblöcke und Wasserzählerstrecken (Water Meter Mounting Blocks and Sections) Mounting blocks and connection sections for installing and connecting water meters in building distribution systems; sold to plumbing professionals.
• Frostsichere Außenarmaturen (Frost-proof Outdoor Valves) Frost-proof outdoor valves designed to prevent freezing damage in external water installations; sold to professional installers and building operators.
• TRESOR Versorgungsstation für Wasser und Strom Combined water and electricity supply station providing secure utility connections for buildings; sold to professional installers and facility developers.
• Probenahmeventile (Sampling Valves) Sampling valves used to collect water samples for drinking water quality testing in building installations; sold to plumbing professionals and hygiene inspectors.
• ThermoSystem KTS (KTS Fresh Water Station) Thermal system for hot water circulation, temperature management, and hygienic fresh water preparation through plate heat exchanger technology; sold to professional installers and building operators.
• FROSTI Smart Frost-Proof Outdoor Valve Smart frost-proof outdoor valve with integrated monitoring and control for winter protection of external building water installations; sold to professional installers and facility managers.
• MULTI-THERM PRO Advanced thermal separation system for optimized hot water and heating system performance in buildings; sold to professional installers.
• Rotguss bleifrei (Lead-Free Gun Metal) Lead-free gunmetal casting material compliant with REACH and RoHS regulations for seamless conversion without material compromises; sold to industrial valve manufacturers and OEMs.
• Rotguss Mehrstoffbronze (Multi-Component Bronze Alloys) Multi-component bronze alloys including CuSn7Zn4Pb7-C-GS, CuSn7Zn2Pb3-C-GS, CuSn5Zn5Pb5-C-GS, and CuSn3Zn8Pb5-C-GS for industrial casting applications; sold to industrial manufacturers.
• KHP Legierungen (Proprietary KHP Alloy Series) Proprietary KHP-brand copper and copper-alloy series including KHP102 (CuNiSi), KHP102M (CuNiSi), KHP7025 (CuNi3SiMg), KHP7026 (CuNi2Si), KHP15 (CuSn0.15), KHP105 (CuNi1Sn0.5), KHP109 (CuNi1Sn0.9), KHP181 (CuCrZr), KHP10 (CuFe0.1P), and KHP194 (CuFe2P) for specialized industrial applications; sold to industrial and electronics customers.
• Kupfer und Kupferlegierungen Walzprodukte (Copper and Copper Alloy Rolled Strips and Coils) Copper and copper-alloy strips and coils including standard grades (Cu-ETP, Cu-PHC, Cu-HCP, Cu-OF) and tin bronzes (CuSn4–CuSn10) for industrial manufacturing, electrical, and heat-exchanger applications; sold to industrial customers and OEMs.
• Dendrit STUDIO Planning Software Digital planning software for designing and calculating drinking water circulation systems and thermal separation solutions in building installations; sold to professional installers and plumbing planners.

Quantifiable outcome

• Lead-free gun metal compliant with REACH and RoHS standards

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Scale indicators1 record

Recent moves5 records

Expansion highlights5 records

Others

• Diehl Metall: German nonferrous foundry producing precision cast bronze and brass components including lead-free alloys for the sanitary industry. Comparable to KEMPER's Gusstechnik division (Rotguss bleifrei, Rotguss Mehrstoffbronze) as a competing specialty foundry supplier to European valve OEMs.
• KME Group: European manufacturer of rolled copper and copper-alloy semi-finished products including strips and coils. Directly comparable to KEMPER's Walzprodukte division's Cu-ETP/Cu-OF/CuSn portfolio, though focused upstream rather than on finished valve systems.

Direct peers

• Reflex Winkelmann: German family-owned manufacturer of pressure maintenance, water heating, and storage systems for building services. Mirrors KEMPER's profile as a private Mittelstand industrial firm selling central-plant and water-side equipment into European HVAC and drinking-water projects.
• Caleffi: Italian privately held manufacturer specializing in components and valves for heating, plumbing, and domestic hot water systems. Highly comparable to KEMPER's hydronic, safety, and drinking-water hygiene valves (KHS, KTS, Sicherungsarmaturen).
• Watts Water Technologies: US-listed manufacturer of valves, fittings, and water-quality products for residential, commercial, and industrial markets. Comparable in lead-free brass valve product lines and B2B distribution to professional installers — directly overlapping KEMPER's core business.
• Flamco (Aalberts): Aalberts Hydronic Flow Control brand manufacturing pressure vessels, expansion tanks, air-and-dirt separators, and valves for HVAC and building services. Closely comparable to KEMPER's central plant equipment — including the KTS Frischwasserstation — and safety/control valve ranges.
• IMI Hydronic Engineering: A division of IMI plc focused on balancing, control, and pressure-independent valves for HVAC, heating, and water systems in buildings. Directly comparable to KEMPER's Building Technology valve and control-valve portfolio (Regulierarmaturen, Druckminderer, Messtechnik).

Broad incumbents

• Uponor: Nordic supplier of plumbing, heating, and cooling solutions for residential and commercial buildings. Comparable to KEMPER in drinking-water installation systems and valve assemblies, and overlaps in serving the same European professional installer base.
• Geberit: Swiss sanitary systems incumbent with broad installation systems, piping, and bathroom product portfolios. Operates well above KEMPER's scale but overlaps in building water installation systems, drinking-water hygiene components, and concealed/Unterputz valve categories.
• Grohe (LIXIL): Global bathroom and kitchen fittings brand owned by LIXIL. A broad incumbent in the same regulated drinking-water fittings market as KEMPER, with overlapping lead-free product positioning but substantially broader consumer-facing scale.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

Compliance2 records

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 Gebr. Kemper