What Siebeck does

Siebeck GmbH is a family-owned German industrial valve manufacturer founded in 1896 and headquartered in Mettmann, Germany (with a separate firmographics record also listing Ratingen). The company operates as a private Gesellschaft mit beschränkter Haftung (GmbH) with 11–50 employees and produces a focused portfolio of industrial valves — ball valves, gate valves, butterfly valves, swing check valves — plus specialized fittings for tank and bitumen vehicles. Its products are engineered in standardized configurations across wide pressure (PN 6 to PN 160, ANSI 150 to 600) and size (DN 40 to DN 800) ranges, with named variants including the Gate Valve Type HK, Through-conduit Gate Valve Type EP, Butterfly Valve Type KL, Swing Check Valve Type RK, and Granulate Ball Valve.

The company serves three primary end-markets: the chemical industry (processing and transport of hazardous media), oil and gas (high-pressure and safety-critical applications), and the food industry (hygiene- and compliance-driven applications), with an additional niche in valves for tank and bitumen trucks. Products are differentiated primarily by domain specialization — robust construction, long service life, and customization to customer specifications — rather than by software, electronics, or AI features. The company states it uses modern manufacturing techniques and materials to deliver customized solutions with reliable lead times.

Siebeck's go-to-market is a single direct-sales channel aimed at enterprise industrial buyers in Germany, supplemented by a basic corporate website (siebeck.biz) and a LinkedIn page. Pricing is not publicly disclosed; quotes are handled via a call-back service and contact form. The company claims 1,000+ satisfied customers worldwide and 500,000+ valves delivered, although no revenue, certifications, patents, named customers, or management team details are publicly available. There is no indication of external investors, parent companies, M&A activity, or funding rounds — ownership and control appear to remain with the founding family.

Name

Siebeck

Legal name

Siebeck GmbH

Website

https://siebeck.biz

Company type

Private

Founded year

1896

Operating status

Operating

Headcount range

11–50 employees

Short description

Siebeck GmbH is a family-owned German industrial valve manufacturer founded in 1896, producing ball, gate, butterfly, and check valves plus tank/bitumen fittings for the chemical, oil and gas, and food industries via direct B2B sales.

Ownership category

akta.pro rank

Product category

Industrial Valve Manufacturing

NAICS

Industrial Valve Manufacturing (332911), Metal Valve Manufacturing (33291)

SIC

General Industrial Machinery & Equipment, Nec (3569)

akta.pro primary industry

Valves & Cartridge Valves (Directional, Pressure, Flow Control) (IMAHAGAE)

akta.pro secondary industry

Seals, Valves & Auxiliary Components (for Pumps/Compressors) (IMAHANAH)

Keywords

• Industrial valves
• Ball valves
• Gate valves
• Butterfly valves
• Tank and bitumen fittings

Headquarters

HQ city

Ratingen

HQ country

Germany

HQ region

Europe

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Distribution channels1 record

Marketing channels2 records

Core offering

Siebeck GmbH manufactures and distributes industrial valves and fittings for chemical, oil and gas, and food industry customers. The core product line includes ball valves, gate valves, butterfly valves (with swing check variants), and specialized valves/fittings for tank and bitumen vehicles, delivered as customized solutions with modern manufacturing techniques and materials.

Product overview

Siebeck GmbH is a family-owned industrial valve manufacturer established in 1896, producing high-quality ball valves, gate valves, and fittings for tank and bitumen vehicles. The product portfolio centers on Industrial Valves (comprising Ball Valves, Gate Valves including the Type HK and Through-conduit Gate Valve Type EP, and Butterfly Valves including the Type KL and Swing Check Valve Type RK) plus specialized Valves for tank and bitumen trucks. Products serve the chemical, oil and gas, and food industries. The company employs modern manufacturing techniques and materials to offer customized solutions with reliable quality.

Differentiator

Problem solved

Functional benefit

Products and services

• Ball Valves High-quality ball valves for industrial applications across chemical, oil and gas, and food industries, including variants such as granulate ball valves and 3-way ball valves.
• Gate Valves Industrial gate valves for shutting off flow in industrial applications, including through-conduit gate valves (for media heavily contaminated with solid particles) and wedge gate valves.
• Butterfly Valves Soft-sealing butterfly valves universally applicable for shutting off liquids, gas, and vapors in plants, including swing check valves for flow control.
• Valves for tank and bitumen trucks Specialized valves and fittings designed for tank and bitumen vehicles, including bitumen bottom valves for heavy-duty applications.
• Gate Valve Type HK Universal gate valve per DIN EN 1984 for gas, water, steam, or oil applications; available in PN 40 - PN 100 pressure ratings and DN 40 - DN 600 sizes.
• Through conduit Gate Valve Type EP Through-conduit gate valve designed for media heavily contaminated with solid particles; available in PN 40 - PN 160 and ANSI 150/300/600 ratings, sizes DN 100 - DN 300.
• Butterfly Valve Type KL Soft-sealing, maintenance-free butterfly valve universally applicable for shutting off liquids, gas, and vapors in plants; available in PN 6 - PN 16, DN 40 - DN 800.
• Swing Check Valve Type RK Heavy-type swing check valve with internal disc shaft and metal sealing, designed for water flow medium; available in PN 10/16 up to PN 63/100/160 ratings, sizes DN 50 - DN 600.
• Granulate Ball Valve Two-piece body granulate ball valve with full bore design, anti-blow-out spindle, and upstream sealing; rated PN 16, sizes DN 50 - DN 200.

Segments3 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Expansion highlights3 records

Direct peers

• KSB SE & Co. KGaA: German-headquartered global manufacturer of industrial pumps, valves, and related service. Closest direct peer to Siebeck given shared German Mittelstand heritage, industrial valve portfolio, and multi-vertical exposure (chemical, oil and gas, water).
• Crane Company: US-listed diversified industrial manufacturer with a major process flow technologies segment producing industrial valves (gate, globe, check, ball, butterfly). Direct peer in industrial valve categories that overlap heavily with Siebeck's product set.
• Flowserve Corporation: One of the world's largest manufacturers of industrial pumps, valves, and seals serving oil and gas, chemical, power, and water. Comparable across Siebeck's core valve categories and end markets, especially oil and gas and chemical.
• Velan Inc. Canadian manufacturer of industrial valves (gate, globe, check, ball, butterfly, severe service) for power, oil and gas, chemical, and pulp and paper. Closely comparable product portfolio and end markets to Siebeck.
• SAMSON AG: German family-owned manufacturer specializing in control valves and automation for process industries (chemical, oil and gas, power, food). Comparable in family ownership structure, German Mittelstand roots, and process-industry customer base.
• AVK Holding A/S: Denmark-based manufacturer of valves for water, gas, wastewater, and industrial applications. Comparable in independent ownership profile, broad industrial valve range, and presence in European industrial markets.
• Mueller Industries, Inc. US manufacturer of copper, brass, aluminum, and plastic products including a portfolio of industrial valves and fittings. Comparable in valve manufacturing focus across multiple industrial end uses.

Broad incumbents

• Watts Water Technologies, Inc. US-listed manufacturer of plumbing, water quality, and flow control products including valves for industrial, commercial, and residential markets. Overlaps with Siebeck's valve portfolio, particularly in fluid handling and shut-off applications.
• Pentair plc: Global water and fluid solutions company with industrial valve offerings for water treatment, food and beverage, and industrial process applications. Broader portfolio but overlapping with Siebeck's food-industry and industrial valve customers.

Emerging players

• Neway Valve (Suzhou Neway Valve Co., Ltd.): China-based manufacturer of industrial ball valves, gate valves, check valves, and specialty valves serving oil and gas, chemical, and power. Comparable in product portfolio and end markets, and a representative low-cost competitor that pressures European niche players on price.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat3 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/siebeck-gmbh
• Facebookfacebook.com/profile.php

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 Siebeck