Winteb

What Winteb does

Winteb B.V. is a Dutch privately-held manufacturer specializing in seawater-resistant aluminium air vent heads for the maritime industry, headquartered in Winschoten, Netherlands. Founded in 2000, the company developed its flagship WIN2000 air vent head series that year and built on what it describes as a long tradition of aluminium casting expertise to become, in its own words, the world's largest producer of seawater resistant aluminium air vent heads. Its core technology is centred on patented HIAS (High Inlet Air Speed) technology, designed specifically for stability tanks and anti-heeling tanks, with all products produced from seawater-resistant aluminium for corrosion resistance in marine environments.

The product portfolio has expanded beyond air vent heads to include the WIKO5000 series (in production since the mid-1980s), the WIN2000 HIAS variants (closable, heated, PV valve), the WIN2000 HIAS + LMV combination, watertraps, and the Liquid Mud Valve (LMV) launched in 2010. The LMV DN200 is approved as gas-tight under IMO resolution A.1122(30) for transport of offshore contaminated materials, opening a regulatory-adjacent offshore segment. Products are type approved by multiple classification societies including Bureau Veritas, Lloyd's Register, DNV, ABS, RINA, KR, and IRS. Winteb also operates as the official Netherlands dealer for Tekno-Mar doors & hatches and IMS watertight doors, providing complementary marine hardware to shipyard customers.

Winteb operates a B2B direct sales model with a quote-request funnel on its website, supplemented by a global network of agents and representatives. Customer segments span commercial shipping, naval and government maritime, shipbuilders and shipyards, and the offshore industry, with named references including the Royal Dutch Navy (via Damen Shipyards), Royal Thai Police, Wijnne Barends, Sea Crest Marine, and Dutch shipyards such as Koninklijke Niestern Sander and Groninger Shipyard. Revenue is generated through hardware sales with non-publicly-disclosed pricing negotiated per project via a free offer request system. The company is privately held with no disclosed funding rounds, ownership, or institutional investors.

Name

Winteb

Legal name

Winteb B.V.

Website

https://winteb.nl

Company type

Private

Founded year

2000

Operating status

Operating

Headcount range

11–50 employees

Short description

Winteb B.V. is a Dutch privately-held manufacturer of seawater-resistant aluminium air vent heads and related marine equipment, serving commercial shippers, shipyards, navies, and the offshore industry via direct sales and a global agent network.

Ownership category

akta.pro rank

Product category

Marine Equipment Manufacturing

NAICS

Industrial and Commercial Fan and Blower and Air Purification Equipment Manufacturing (333413)

SIC

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

akta.pro primary industry

Marine HVAC, Refrigeration & Ventilation Systems (IMAJAIAE)

akta.pro secondary industry

Piping, Valves & Pumps (Deck/Service Systems Components) (IMAJAIAI)

Keywords

• Marine air vent heads
• Seawater resistant aluminium
• Shipbuilding marine equipment
• Stability tank valves
• Naval maritime hardware

Headquarters

HQ city

Winschoten

HQ country

Netherlands

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Air Vent Heads and Marine Equipment Sales: Revenue generated from the sale of proprietary seawater resistant aluminium air vent heads and related marine equipment including the WIN2000 and WIKO5000 series, watertraps, and liquid mud valves.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels2 records

Core offering

Winteb manufactures and sells seawater resistant aluminium air vent heads and related marine equipment for commercial vessels, naval ships, and offshore platforms. The core product range includes the patented WIN2000 HIAS series (featuring High Inlet Air Speed technology for stability and anti-heeling tanks), the WIKO5000 series, watertraps, and the Liquid Mud Valve (LMV). The company also serves as the official Netherlands dealer for complementary maritime products such as Tekno-Mar doors and hatches and IMS Watertight doors.

Product overview

Winteb is a specialized manufacturer of seawater resistant aluminium air vent heads and related marine equipment. The core product portfolio centers on the WIN2000 HIAS series (featuring patented HIAS technology with enhanced inlet air speed for stability and anti-heeling tanks) and the WIKO5000 series (proven since the mid-1980s). The product lineup includes variants such as closable versions, heated models, and the WIN2000HIAS PV valve, complemented by the Liquid Mud Valve (LMV) and Watertrap for tank management applications. As an official dealer, Winteb also distributes Tekno-Mar doors & hatches and IMS Watertight doors in the Netherlands. The company positions itself as 'The original' and the world's largest producer of seawater resistant aluminium air vent heads, with HIAS technology being a key differentiator.

Differentiator

Problem solved

Functional benefit

Products and services

• WIN2000 HIAS Revolutionary air vent head produced from seawater resistant aluminium with patented HIAS technology that significantly increases maximum inlet air speed. Designed for stability tanks and anti-heeling tanks on vessels.
• WIKO5000 Type 1A Tough and reliable quality air vent head in production since the mid-1980s, proven as a dependable product line for marine vessel applications.
• WIKO5000 Gooseneck Gooseneck type air vent heads available in two executions, including the Inverted type (Type 1B) configuration for marine vessel air intake applications.
• WIN2000 HIAS Closable Closable version of the WIN2000 HIAS air vent head, allowing the air vent to be sealed when required for operational or safety reasons.
• WIN2000 HIAS + LMV Combination product integrating WIN2000 HIAS air vent head with Liquid Mud Valve (LMV) functionality for comprehensive tank management on vessels.
• Watertrap Designed to prevent the exit of water from stability tanks, thereby preventing the decrease of vessel stability on marine applications.
• LMV (Liquid Mud Valve) Liquid Mud Valve developed for tank applications. LMV DN200 approved as gas tight compliant with IMO resolution A.1122(30) for transport of offshore contaminated materials.
• WIN2000 HIAS Heated Heated version of the WIN2000 HIAS air vent head, designed to prevent freezing or condensation issues in cold-climate marine operations.
• WIKO5000 Heated Heated version of the WIKO5000 air vent head series for marine operations in cold-climate environments.
• WIN2000HIAS PV valve Pressure/vacuum (PV) valve integrated with the WIN2000HIAS air pipe head, providing pressure and vacuum relief on marine tanks.

Quantifiable outcome

• LMV DN200 approved as gas tight per IMO resolution A.1122(30) for offshore contaminated material transport

Named customers11 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

Feature4 records

Partnerships

Three partnerships are on record, tiered core and minor.

• Damen ShipyardscoreStrategic or Co-development Partner · 11 February 2021Winteb and Damen signed an agreement for supply of air vent heads for Royal Dutch Navy combat support ships. Damen is a major international shipbuilding group and this represents a significant strategic customer-partnership for naval vessel projects.
• Tekno-MarminorChannel Partner/ Reseller/ DistributorWinteb is the official dealer of Tekno-Mar Doors & Hatches in the Netherlands, offering complementary maritime products including doors and hatches to their customer base.
• IMS Watertight DoorsminorChannel Partner/ Reseller/ DistributorWinteb is the official dealer of IMS Watertight Doors in the Netherlands, providing complementary watertight door solutions alongside their air vent head products.

Scale indicators1 record

Recent moves6 records

Expansion highlights5 records

Direct peers

• Hamworthy (Wärtsilä): Originally a stand-alone UK marine equipment maker (pumps, valves, compressors, HVAC), now part of Wärtsilä. Comparable to Winteb in marine valves, tank equipment, and air-handling systems supplied to commercial and naval shipyards globally.
• Klaw LNG (Klaw Products): UK-based specialist in marine cryogenic and LNG transfer valves, with a heritage in marine valve products. Comparable to Winteb for its marine valve expertise and certifications for handling regulated, gas-tight applications on vessels.
• Sperre AS: Norwegian manufacturer of marine refrigeration, compressors, and air/gas systems for offshore and shipboard applications. Comparable to Winteb because it supplies specialized tank and gas-handling equipment to the same offshore, naval, and shipyard customers.
• Strahman Valves: US-based manufacturer of industrial and marine valves, including sampling, dosing, and tank-related valve products. Comparable to Winteb's Liquid Mud Valve line, serving shipboard and industrial tank applications.
• Caldex Heat Exchangers: Norwegian manufacturer of marine heat exchangers and cooling systems for shipboard applications. Comparable to Winteb as a Nordic specialty manufacturer of marine thermal and fluid equipment sold through type-approved channels to shipyards.
• TMC (TMC Compressors): Norwegian manufacturer of marine compressed air systems, including starting air, control air, and breathing air equipment for ships. Directly comparable to Winteb as a Nordic-region specialist serving the same naval and commercial shipyard customer base with on-board air/gas handling systems.

Broad incumbents

• Wärtsilä: Finnish marine conglomerate offering ship engines, propulsion, and a wide range of marine equipment including pumps, valves, and HVAC. Overlaps with Winteb in tank and air-handling equipment but competes as a broad system integrator rather than a single-component specialist.
• The Crosby Group: Global manufacturer of marine and lifting fittings, rigging hardware, and load-handling equipment. Adjacent comparator to Winteb for marine outfitting hardware, though focused on lifting/load-handling rather than tank and air systems.
• Alfa Laval: Swedish multinational supplying marine heat transfer, separation, and fluid handling equipment across HVAC, fuel, and tank systems. Comparable to Winteb at the level of marine HVAC and tank-related equipment, but operating with a much broader product portfolio and global service network.

Regional players

• Brødrene Sunde: Norwegian distributor and service provider of marine equipment including valves, fittings, and HVAC components. Comparable to Winteb as a Norway-adjacent specialist serving North Sea offshore and shipyard customers, though positioned more as a channel partner than manufacturer.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/wintebbv
• LinkedInlinkedin.com/company/winteb-v.o.f.

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 Winteb