ZELUP
ZELUP designs and markets the Deltae two-phase firefighting nozzle system, a patented hydropneumatic technology that reduces water consumption 6–8x versus conventional nozzles. The company sells directly to French government fire departments and is expanding internationally following its 2023 merger with Leader Group.
- Company typePrivate
- Founded2012
- HeadquartersLyon, France
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
What ZELUP does
ZELUP is a French company, headquartered in Lyon, that designs, industrializes, and markets the Deltae two-phase (diphasic/bifasique) firefighting nozzle system. The product is based on a patented hydropneumatic misting technology that combines a water pump (6–12 bar) with a compressor (air at 6 bar) feeding a proprietary nozzle, which fragments water into micro-droplets and propels them at very high speed toward the fire source. The system produces four types of two-phase fog patterns, reduces water consumption by 6–8 times versus conventional nozzles, and provides secondary benefits including smoke cooling, radiant heat reduction, and capture of suspended particles. The technology is designed and manufactured entirely in France, with multiple patents filed by founder Thomas Issler.
The Deltae nozzle was co-developed with the principal French government firefighting authorities — Brigade de sapeurs-pompiers de Paris (BSPP), Marins Pompiers de Marseille (BMPM), SDMIS, SDIS 35, and SDIS 77 — and is supported by the Direction Générale de l'Armement (DGA). First deliveries of operational firefighting vehicles equipped with the system occurred in 2022. ZELUP generates revenue through direct enterprise field sales of the Deltae hardware to government fire departments and civil security organizations; pricing is not publicly disclosed.
In 2023, ZELUP merged with Leader Group, a diversified conglomerate that also owns Bio-Ex (firefighting foams), Leader Photonics, and Tempest. The merger is positioned as a vehicle to accelerate ZELUP's growth in France and internationally, and is reflected in the deployment of a multilingual corporate website (FR, EN, ES, DE, IT, PL). The company operates as a subsidiary within Leader Group while maintaining the ZELUP brand and the Deltae sub-brand.
ZELUP firmographics
Firmographics- Name
- ZELUP
- Legal name
- Zelup
- Website
- https://zelup.com
- Company type
- Private
- Founded year
- 2012
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- ZELUP designs and markets the Deltae two-phase firefighting nozzle system, a patented hydropneumatic technology that reduces water consumption 6–8x versus conventional nozzles. The company sells directly to French government fire departments and is expanding internationally following its 2023 merger with Leader Group.
- Ownership category
- akta.pro rank
ZELUP industry classification
Industry- Product category
- Firefighting Equipment
- NAICS
- Measuring, Dispensing, and Other Pumping Equipment Manufacturing (333914), Air and Gas Compressor Manufacturing (333912)
- SIC
- Pumps & Pumping Equipment (3561), Gaskets, Packg & Sealg Devices & Rubber & Plastics Hose (3050)
- akta.pro primary industry
- Trigger Sprayers & Mist Sprayers (IMALALAE)
- akta.pro secondary industries
- Dropper Systems (Droppers, Pipettes, Teats) (IMALALAG), Hydro Jetting Services (HSAOABAD)
Keywords
Where ZELUP is headquartered
LocationHeadquarters
- HQ city
- Lyon
- HQ country
- France
- HQ region
- Europe
Offices1 record
Markets served
ZELUP business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Technology or R&D, Personnel, Marketing or Sales, Operations
Revenue model
- Firefighting equipment sales: Zelup generates revenue through the sale of its proprietary two-phase firefighting nozzle systems (Deltae) and related equipment to government fire departments and civil security organizations.
Go-to-market motion1 record
Distribution channels1 record
Marketing channels3 records
ZELUP product offering
Product offeringCore offering
ZELUP designs, manufactures, and markets the Deltae two-phase (diphasic) firefighting nozzle system. The product uses patented hydropneumatic water fragmentation technology to produce high-velocity fine water droplets propelled by compressed air, enabling superior fire suppression while consuming 6–8 times less water than conventional nozzles. The system is co-developed with French fire brigades and integrated into operational firefighting vehicles.
Product overview
ZELUP offers a single unified product: the Deltae two-phase firefighting nozzle system. The product combines a patented hydropneumatic droplet fragmentation technology with a specific nozzle design to produce high-speed two-phase fog. The system requires a pump (water at 6-12 bars) and compressor (air at 6 bars) to generate four types of two-phase fogs. ZELUP's offerings are centered entirely on this mobile firefighting nozzle system, which is designed for integration into operational firefighting vehicles and provides significant advantages in water consumption, firefighter safety, and fire extinction effectiveness.
Differentiator
Problem solved
Functional benefit
Brands
- Deltae: Revolutionary two-phase nozzle for firefighting. Deltae stands for Dispositif d'Extinction par Lance à Tuyère Air Eau (Fire Extinguishing Device by Air-Water Nozzle Lance).
Products and services
- Deltae Nozzle A revolutionary firefighting nozzle that uses two-phase misting technology (hydropneumatic water fragmentation) to produce and propel fine water droplets through a very high-speed air stream. Consumes 6 to 8 times less water than conventional nozzles while providing superior firefighting performance. Designed for integration into operational firefighting vehicles and sold to government fire departments.
- Deltae Fire Extinguishing Device (Dispositif d'Extinction par Lance à Tuyère Air Eau) Fire extinguishing device with air-water nozzle that revolutionizes extinguishing systems through a unique two-phase nebulization process. Provides firefighter protection, ease of use, maneuverability, and effective extinction. The device cools smoke, reduces radiated heat fluxes, and captures suspended particles while consuming 6-8 times less water than conventional nozzles.
Companies that use ZELUP
Customer profileNamed customers5 records
Segments2 records
Ideal customer profiles2 records
ZELUP technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature3 records
ZELUP partnerships and signals
Strategic signalPartnerships
Ten partnerships are on record, tiered core, flagship and minor.
- Brigade de sapeurs-pompiers de Paris (BSPP)coreThe Paris Fire Brigade is the primary co-development partner for the two-phase firefighting nozzle. In 2017, BSPP contacted founder Thomas Issler to adapt the Zelup technology to fire hoses. BSPP participated in testing the Deltae nozzle and has deployed it on operational vehicles.
- Marins Pompiers de Marseille (BMPM)coreThe Marseille Naval Firefighters participated in the co-development and testing of the Deltae two-phase firefighting nozzle system.
- Service Départemental d'Incendie et de Secours du Rhône (SDMIS)coreThe Rhône departmental fire and rescue service co-developed the two-phase nozzle system with Zelup.
- Service Départemental d'Incendie et de Secours d'Ille-et-Vilaine (SDIS 35)coreThe Ille-et-Vilaine departmental fire and rescue service co-developed the two-phase nozzle system with Zelup.
- Service Départemental d'Incendie et de Secours de Seine-et-Marne (SDIS 77)coreThe Seine-et-Marne departmental fire and rescue service co-developed the two-phase nozzle system with Zelup.
- Direction Générale de l'Armement (DGA)flagshipThe French Defense Procurement Agency (DGA) is a key institutional partner supporting the development of the two-phase firefighting technology, validating its military-grade reliability and performance.
- Ligne de Protection Civile de Paris (LCPP)minorThe Civil Protection Line of Paris is listed as a partner supporting the development of the two-phase firefighting system.
- AIDminorListed as a partner supporting the development of the two-phase firefighting system. AID (Association des Internautes Détachés or other expanded name not specified in source).
- Région Île-de-FranceminorThe Île-de-France region is listed as a partner supporting the development of the two-phase firefighting system.
- Leader GroupflagshipZelup merged with Leader Group in 2023 in a transaction designed to accelerate the growth and development of Zelup in France and internationally. Leader Group is a parent company that also owns Bio-Ex, Leader Photonics, and Tempest.
Scale indicators5 records
Recent moves7 records
Expansion highlights4 records
ZELUP competitors and assessment
Company assessmentDirect peers
- Elkhart Brass: US-based manufacturer of firefighting nozzles, monitors, and valves for municipal and industrial applications. Overlapping product (nozzles) and a long-established incumbent in the same procurement category ZELUP targets.
- Bio-Ex: Sister company inside Leader Group and a firefighting-suppression specialist (foam concentrates and adjacent technologies) selling to the same French and international fire-department buyers. Most direct peer because it shares both parent and target customer base.
- Marioff (HI-FOG): A leading water-mist fire-suppression company widely deployed in marine, industrial, and commercial applications. Closest technology analogue to ZELUP's two-phase water-mist approach and competes for the same 'water-efficient suppression' procurement budgets.
- Fogtec Brandschutz: German-based water-mist fire-protection systems provider serving industrial, marine, and tunnel applications. Directly comparable technology category (high-pressure water mist) and overlapping customer pain points around water consumption and smoke/heat management.
- Task Force Tips: US manufacturer of firefighting nozzles, monitors, and foam hardware sold to municipal and industrial fire services worldwide. Comparable product category (handheld and master-stream nozzles) and the kind of competitor a fire chief would benchmark against Deltae.
- Spraying Systems Co. Global leader in industrial spray nozzles and mist-generating technology. Comparable on the underlying two-phase droplet-generation engineering even though its primary markets are industrial rather than firefighting.
- Lechler GmbH: German manufacturer specializing in precision spray nozzles and atomization technology. Comparable in nozzle/mist engineering competence and serves several adjacent industrial and process-safety markets.
- Hale Products: Manufacturer of fire pumps, foam proportioning, and compressed-air foam systems (CAFS) used on fire apparatus. Overlaps with ZELUP on the pump/air-compression subsystem that powers the Deltae nozzle.
Broad incumbents
- Rosenbauer International: One of the world's largest firefighting-equipment OEMs (vehicles, pumps, nozzles). Indirect peer in that Rosenbauer sells complete fire trucks globally and could integrate — or replicate — nozzle technologies like Deltae.
Regional players
- Tempest Technology (Leader Group): Sister company inside Leader Group providing firefighting and emergency-response equipment, with US-market reach. Comparable product family and geographic complement to ZELUP, and the most likely channel for Deltae to enter North America.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights6 records
Customer concentration
ZELUP social profiles
Digital presenceZELUP compliance and trust
Trust signalCompliance2 records
ZELUP financial estimates
Financial estimateRevenue estimate
Valuation estimate
ZELUP leadership team
Management profileNumber of profiles
Profiles1 record
ZELUP funding detail
Funding detailFunding overview
Funding rounds1 record
Investors1 record
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
ZELUP M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about ZELUP
What does ZELUP do?
ZELUP designs, manufactures, and markets the Deltae two-phase (diphasic) firefighting nozzle system. The product uses patented hydropneumatic water fragmentation technology to produce high-velocity fine water droplets propelled by compressed air, enabling superior fire suppression while consuming 6–8 times less water than conventional nozzles. The system is co-developed with French fire brigades and integrated into operational firefighting vehicles.
Is ZELUP a public or private company?
ZELUP is a private company. It is classified as corporate owned and is currently operating.
When was ZELUP founded?
ZELUP was founded in 2012. It employs 11 to 50 people.
Where is ZELUP based?
ZELUP is headquartered in Lyon, France, in the Europe region.
How does ZELUP make money?
One revenue line is on record: firefighting equipment sales.
Who are ZELUP's main competitors?
Direct peers on record are Elkhart Brass, Bio-Ex, Marioff (HI-FOG), Fogtec Brandschutz, Task Force Tips, Spraying Systems Co., Lechler GmbH and Hale Products. Rosenbauer International is listed as a broad incumbent. Tempest Technology (Leader Group) is listed as a regional player.
Does ZELUP have an API?
No public API is recorded for ZELUP.
What industry is ZELUP in?
ZELUP's product category is Firefighting Equipment. Its primary akta.pro industry code is IMALALAE, Trigger Sprayers & Mist Sprayers, with a secondary code of IMALALAG, Dropper Systems (Droppers, Pipettes, Teats). Its NAICS code is 333914 and its SIC code is 3561.