Wes Gmbh

What Wes Gmbh does

WES GmbH is a German industrial manufacturer specializing in dampers, valves, and custom-engineered gas flow components for power generation, refining, metallurgy, waste-to-energy, cement, and marine/offshore (FPSO) applications. The company designs and produces a portfolio of 13 core product families — including air intake dampers (AID), butterfly dampers (BFD), diverter dampers (DVD), eccentric dampers (EXD), guillotine dampers (GTD), louver dampers (LVD), poppet valves (PPV), roller shutters (RLS), stack dampers (STD), T-pieces (TPD), turn dampers (TUD), and a Marine/Offshore line — engineered for extreme conditions including temperatures up to 1000°C, pressures up to 500 mbar, and tightness up to 99.9% without seal air systems. Underlying technology relies on proprietary mechanical features such as eccentric shaft designs, dual-wall construction with welded-in sealing strips, and metallic sealing defaults, supported by in-house 3D CAD engineering with collision testing and strength calculations.

Founded in 1996 as Wierling Exhaust Systems GmbH and renamed WES GmbH in 2006, the company is part of the Wierling Unternehmensgruppe conglomerate. Manufacturing is executed at three EN 1090-2 certified facilities: Josef Wierling Stahl- und Maschinenbau GmbH in Nordkirchen, EAW Wierling GmbH in Niederorschel, and Pamet S.C. in Prószków, Poland. WES holds DIN EN ISO 9001:2015 quality certification and EAC certification for Eurasian Economic Union market access.

The business model is direct B2B sales-led, with custom-engineered products priced per quotation (no public pricing). Customers reach WES through phone (+49 2599 9395-0) and email ([email protected]), indicating a consultative sales approach for complex industrial projects. Revenue mechanics are project-based with custom specifications driving unit economics; pricing is not publicly disclosed. Distribution is direct-to-end-customer with global delivery capability, supported by service and installation offerings. The company is led by Managing Director Josef Wierling, with a technical, sales/project management, and design/project management organizational structure across roughly 11–50 employees headquartered in Nordkirchen, Germany.

Name

Wes Gmbh

Legal name

WES GmbH

Website

https://wes.de

Company type

Private

Founded year

1996

Operating status

Operating

Headcount range

11–50 employees

Short description

WES GmbH is a German industrial manufacturer of dampers, valves, and custom gas flow components for power plants, refineries, metallurgical facilities, waste-to-energy plants, cement plants, and marine/offshore (FPSO) applications, operating globally through direct B2B project sales.

Ownership category

akta.pro rank

Product category

Industrial Dampers and Valves

NAICS

Industrial and Commercial Fan and Blower and Air Purification Equipment Manufacturing (333413), Other General Purpose Machinery Manufacturing (3339)

SIC

Industrial & Commercial Fans & Blowers & Air Purifing Equip (3564), General Industrial Machinery & Equipment (3560)

akta.pro primary industry

Dampers, Louvers & Ventilation Controls (IMADANAD)

akta.pro secondary industries

Pneumatic Components (FRLs, Cylinders, Valves) (IMAHAGAC), Vacuum Systems & Components (Vacuum Pumps, Ejectors, Cups, Grippers) (IMAHAGAN)

Keywords

• Industrial damper manufacturing
• Shut-off valves
• Gas flow control
• Power plant equipment
• Marine offshore dampers

Headquarters

HQ city

Nordkirchen

HQ country

Germany

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Industrial Dampers and Valves: WES GmbH manufactures and sells industrial shut-off dampers, butterfly valves, guillotine dampers, and related products for power plants, refineries, and industrial applications. Products are custom-engineered based on customer specifications with varying dimensions, materials, and performance requirements.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels2 records

Core offering

WES GmbH designs, engineers, and manufactures industrial dampers, shut-off valves and custom gas-flow components (turn, louver, butterfly, air intake, diverter, guillotine, poppet, roller shutter, stack, T-piece, and eccentric damper types) for power plants, refineries, metallurgical plants, waste-to-energy facilities, cement plants and FPSO/marine applications. The company combines in-house 3D CAD engineering with affiliated Wierling Group manufacturing to deliver custom-engineered products plus global service, installation, repair and spare-parts support.

Product overview

WES GmbH is an industrial valve and damper manufacturer offering a comprehensive portfolio of shut-off and control devices for gaseous media. The product line includes 13 core product families: Air Intake Dampers (AID), Butterfly Dampers (BFD), Diverter Dampers (DVD), Eccentric Dampers (EXD), Guillotine Dampers (GTD), Louver Dampers (LVD), Poppet Valves (PPV), Roller Shutters (RLS), Stack Dampers (STD), T-Pieces (TPD), and Turn Dampers (TUD), plus a specialized Marine/Offshore line. These products serve power plants, metallurgical plants, waste incineration facilities, refineries, ships (FPSO), cement industry, and gas turbines. The company also offers custom special constructions (Sonderkonstruktionen) and engineering services. All products are designed for integration into channel/duct systems and support various drive types (electric, pneumatic, hydraulic) and sealing systems.

Differentiator

Problem solved

Functional benefit

Products and services

• AID - Air Intake Damper (Frischluftklappe) Fresh air intake dampers installed in gas turbine intake ducts to prevent turbine cooling during standstill. Available in single or double-blade configurations with electric drive as standard, with full duct cross-section exposure when open.
• BFD - Butterfly Damper (Drehflügelklappe) Single-vane dampers for controlling or shutting off volume flow in ducts of gas turbines and refineries. Available in round (DN 300 to DN 3500) and angular (300x300mm to 2000x2000mm) configurations with installation lengths 120-240mm.
• DVD - Diverter Damper (Umschaltklappe) Dampers installed downstream from gas turbines to direct flue gas flow to boiler or bypass flue, or distribute flow among them. Features eccentrically mounted vane with electric, hydraulic, or pneumatic drive.
• EXD - Eccentric Damper (Exzentrische Klappe) Dampers for shutting off volume flow with high tightness even without seal air. Vane is pressed against a welded-in circumferential sealing strip.
• GTD - Guillotine Damper (Schieber) Dampers for complete flue gas duct opening or limited installation length applications. Available for round or rectangular duct cross sections, with or without gas-tight cover, with dual wall and seal air system option. Handles temperatures up to 1000°C.
• LVD - Louver Damper (Jalousieklappe) Dampers with two or more vanes used in gas turbine and refinery ducts to control or shut off volume flow. Available in round (DN 400 to DN 5000) and angular (400x400mm to 6000x12000mm) configurations with co-rotating or counter-rotating vane movement.
• PPV - Poppet Valve (Tellerventil) Valves used in exhaust air purification and mixing plants for shutting off volume flows. Features axial plate pressing against seal with up to 99.9% tightness even without seal air system, DN125-DN1200, with inspection chamber for easy cleaning.
• RLS - Roller Shutter (Rolltor) Vertically installed roller shutters that prevent gas turbine cooling during standstill. Available in widths up to 12000mm and heights up to 10000mm with electric drive and handwheel for emergency operation, with segment partition coordinated with customers.
• STD - Stack Damper (Kaminklappe) Dampers serving as rain guards while preventing system cooling. Features dual vanes with eccentric shaft arrangement and drain gutters for rainwater redirection. Available in nominal diameters DN 300 to DN 6000, typically with fail-safe systems.
• TPD - T-Piece Damper (T-Stück) T-pieces for diverting or splitting volume flows in gas turbines and refineries. Available in round (DN 300 to DN 3500) and rectangular (300x300mm to 2000x2000mm) configurations with various angle openings and conical pipe run options.
• TUD - Turn Damper (Schwenkklappe) Dampers used to deflect gases or light solids. Features eccentric shaft design with metallic sealing as default option, nominal diameters from 300x300mm to 2000x2000mm, operating pressures up to 500 mbar and temperatures up to 680°C.
• Marine/Offshore Damper Product Line Specialized dampers for marine and offshore applications including FPSO vessels, with corrosion protection according to EN ISO 12944 standards.
• Sonderkonstruktionen (Special Constructions) Custom special constructions designed according to customer requirements, including spill troughs, droplet separators, and other bespoke gas-flow solutions.
• Engineering Services In-house 3D CAD engineering with collision testing and strength calculations to support custom damper and valve design for industrial customers.
• Service and Installation Global service, installation, repair and spare-parts support for installed WES dampers and valves, including on-site overhaul of hydraulic systems, seal replacement, bearing replacement, vane replacement, and housing crack welding.

Named customers7 records

Segments6 records

Ideal customer profiles6 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature11 records

Partnerships

Six partnerships are on record, tiered core and minor.

• Josef Wierling Stahl- und Maschinenbau GmbHcoreStrategic or Co-development PartnerPart of the Wierling Unternehmensgruppe, this company provides manufacturing services for WES products. Located in Nordkirchen, Germany, with focus on special welded constructions and sheet metal forming.
• EAW Wierling GmbHcoreStrategic or Co-development PartnerPart of the Wierling Unternehmensgruppe, this company provides manufacturing services for WES products at the Niederorschel location in Thuringia, Germany. Specializes in CNC-controlled shape cutting.
• WIEROM Armaturen GmbHminorStrategic or Co-development PartnerSister company in the Wierling Unternehmensgruppe specializing in hand stops, bulkhead gates, channel shutters, and other fittings for sewage and water treatment industry.
• Pamet S.C. (Poland)minorImplementation/ SI/ Consulting PartnerAuthorized workshop in Prószków, Poland that manufactures WES products. EN 1090-2 certified production facility.
• Project Maasvlakte (Netherlands)minorOthersService project example involving replacement of diverter damper vane (3.50m x 3.50m) and fresh air dampers (2.0m x 2.0m) with complete hydraulic system overhaul.
• Project Hemweg (Netherlands)minorOthersService project example involving repair of large flue gas damper units including seal replacement, bearing replacement, vane replacement, and housing crack welding.

Scale indicators2 records

Recent moves7 records

Expansion highlights5 records

Broad incumbents

• KSB SE & Co. KGaA: German global manufacturer of pumps, valves, and related systems for industrial, water, energy, and mining applications. Broader incumbent with overlapping industrial valve portfolio and similar European manufacturing heritage, though with much larger scale.
• Siemens Energy: Major global OEM of gas turbines and power plant technology, including damper and shut-off equipment integrated into turbine packages. Indirect incumbent — WES supplies components into gas turbine installations where Siemens Energy is the prime OEM.
• GE Vernova: US-based major OEM of gas turbines, steam turbines, and grid technology, with industrial-scale air intake and exhaust system capabilities. Indirect incumbent providing a competitive reference point for damper scope within turbine packages that WES serves as a specialist component supplier.
• Babcock & Wilcox: Major US-headquartered supplier of power generation equipment and aftermarket services, including industrial dampers and boiler components. Larger incumbent with broader scope but overlapping capability in flue gas and high-temperature dampers for power plants.

Direct peers

• Heinkel Process Technology GmbH: German manufacturer of filters, dampers, and process equipment for chemical, pharmaceutical, and industrial applications. Comparable niche industrial equipment maker with engineering-to-order model serving similar European industrial customers.
• SPX Technologies (Flow Technology segment): US-based diversified industrial company with a flow technology segment providing valves, pumps, and dampers for power, oil & gas, and chemical industries. Directly comparable product offerings in shut-off devices and similar customer base to WES.
• Hamon & Cie (Hamon Group): Belgian industrial group specializing in heat exchangers, dampers, and air-cooled condensers for thermal power plants and process industries. Direct peer in flue gas and gas turbine damper product lines serving similar European and global utility customers.
• Clyde Process Solutions (ANDRITZ): Originally Clyde Industries/Process Solutions, now part of ANDRITZ Group, specializing in dampers, valves, and process equipment for power plants, cement, and minerals. Direct comparable in industrial shut-off devices for high-temperature gas service and similar end markets.
• Alois Klee GmbH: German manufacturer of industrial dampers and shut-off valves for power plants, waste incineration, and process industries. Closest direct competitor to WES in the German-speaking market, with overlapping product lines (butterfly, louver, guillotine dampers) and customer verticals.
• Velan Inc. Canadian-headquartered industrial valve manufacturer with deep presence in power, oil & gas, and chemical markets. Direct competitor in industrial valves (including poppet-type and high-service applications) with global manufacturing footprint.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks7 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/wes-gmbh

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 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 Wes Gmbh