Elmac Technologies
Elmac Technologies (now Protectoseal Ltd, UK) is a UK-based industrial equipment manufacturer specializing in patented flame arresters and pressure/vacuum relief valves. It serves global oil & gas, energy, distillery, and biogas customers through direct sales and a worldwide agent network.
- Company typePrivate
- Founded1955
- HeadquartersHolywell, United Kingdom
- Headcount101–250
- GTM typeB2B
- OfferingHardware or Manufacturing
What Elmac Technologies does
Elmac Technologies, now operating as Protectoseal Limited (UK), is a private UK-based industrial equipment manufacturer founded in 1948 (or 1955 per Companies House registration 06290530) and headquartered in Greenfield, Flintshire. The company designs and manufactures a market-leading range of patent-protected flame arresters and pressure/vacuum relief valves (PVRVs) used to prevent catastrophic explosions, flame propagation, and tank rupture or implosion in industrial process environments. Its product portfolio spans 17 series across three categories — end-of-line deflagration, in-line deflagration, and in-line unstable detonation flame arresters — underpinned by three proprietary technology platforms: E-Flow (crimped-ribbon elements offering up to 30% improved flow versus competitor equivalents), HEDS (High Energy Dissipation System for detonation scenarios), and RE-Flow (reverse-flow, self-draining configuration up to 5x lighter than standard flanged designs).
The business operates a direct enterprise sales model augmented by a worldwide agent and representative network supported by an Agent Portal login system and Rep Locator tool. All products are ATEX-certified under EU Directive 2014/34/EU and manufactured to EN ISO 16852, with the company holding ISO 9001, ISO 14001, ISO 45001, and PAS 99 certifications. Customers are predominantly large enterprise accounts in Oil & Gas (Shell, ExxonMobil, Petrobras) and Energy (Total, ConocoPhillips, BP, Scottish Power, EDF Energy, Rolls Royce, Calor), with secondary expansion into Distilleries and Biogas verticals. Pricing is not publicly disclosed and is engineered-to-order based on customer application requirements, with bespoke solutions delivered via in-house technical experts using computational fluid dynamics (CFD) software. In 2025, the company rebranded to Protectoseal Limited (UK), aligning with the global Protectoseal brand identity.
Elmac Technologies firmographics
Firmographics- Name
- Elmac Technologies
- Legal name
- Elmac Technologies Ltd
- Website
- https://elmactechnologies.com
- Company type
- Private
- Founded year
- 1955
- Operating status
- Operating
- Headcount range
- 101–250 employees
- Short description
- Elmac Technologies (now Protectoseal Ltd, UK) is a UK-based industrial equipment manufacturer specializing in patented flame arresters and pressure/vacuum relief valves. It serves global oil & gas, energy, distillery, and biogas customers through direct sales and a worldwide agent network.
- Ownership category
- akta.pro rank
Elmac Technologies industry classification
Industry- Product category
- Industrial Explosion Protection Equipment
- NAICS
- Industrial and Commercial Fan and Blower and Air Purification Equipment Manufacturing (333413), Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (3334)
- SIC
- Industrial & Commercial Fans & Blowers & Air Purifing Equip (3564)
- akta.pro primary industry
- Process Safety & Relief Systems (Flare Systems, PRVs, Explosion Protection) (IMAHAEAL)
- akta.pro secondary industry
- Special Hazard Fire Suppression Systems (Clean Agent/Foam/CO₂/Kitchen Hood) (BPABAHAD)
Keywords
Where Elmac Technologies is headquartered
LocationHeadquarters
- HQ city
- Holywell
- HQ country
- United Kingdom
- HQ region
- Europe
Offices1 record
Markets served
Elmac Technologies business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Personnel, Supply Chain, Technology or R&D, Operations, Marketing or Sales, Infrastructure
Revenue model
- Industrial Safety Equipment Sales: Sale of flame arresters and pressure/vacuum relief valves to industrial customers. Products are custom-designed to meet specific application requirements with bespoke, cost-effective solutions. Revenue is generated through direct sales and agent network.
Go-to-market motion1 record
Distribution channels2 records
Marketing channels4 records
Elmac Technologies product offering
Product offeringCore offering
Elmac Technologies designs, manufactures, and supplies ATEX-certified Flame Arresters (End-of-Line Deflagration, In-Line Deflagration, In-Line Unstable Detonation types) and Pressure/Vacuum Relief Valves used to protect industrial tanks, vessels, and piping systems against catastrophic explosions, flame propagation, and under/over-pressure conditions. Products are custom-engineered to specific application requirements and incorporate patent-protected E-Flow, HEDS, and RE-Flow proprietary element technologies.
Product overview
Elmac Technologies (now Protectoseal Ltd, UK) is an industrial equipment manufacturer specializing in explosion and pressure protection. The product portfolio consists of two main categories: Flame Arresters (end-of-line deflagration, in-line deflagration, and in-line detonation types) and Pressure/Vacuum Relief Valves. The flame arrester range includes 17 distinct series (EVA, EVB, AVC, ERB, SV, EHB, ESA, LCA, LCB, DFC, LEA, LEB, DFB, SGE-IB, MB-IB, UEA, UCA, UCB) utilizing three proprietary technologies: E-Flow (enhanced-flow crimped ribbon elements), HEDS (High Energy Dissipation System for detonation arresters), and RE-Flow (reverse-flow configuration for self-draining). All products are ATEX certified and manufactured in accordance with EN ISO 16852. The company serves major industrial sectors including oil and gas, petrochemical, and energy.
Differentiator
Problem solved
Functional benefit
Products and services
- EVA Series Flame Arresters End-of-Line Flame Arrester specifically designed for IIA explosion group applications, providing protection against atmospheric deflagration where the ignition source originates outside of the system.
- EVB Series Flame Arresters End-of-Line Flame Arrester specifically designed for IIB3 explosion group applications.
- AVC Series Flame Arresters End-of-Line Flame Arrester specifically designed for IIC explosion group applications.
- ERB Series Flame Arresters End-of-Line Flame Arrester featuring RE-Flow technology, designed specifically for IIB3 explosion group applications. Features a self-draining element that prevents rain, dirt, or other foreign bodies from entering the piping system.
- SV Series Flame Arresters Lightweight End-of-Line Flame Arrester and Flame Trap made from zinc or aluminum alloy, suitable for use across explosion groups IIA - IIB3.
- EHB Series Flame Arresters End-of-Line Flame Arrester designed specifically for high temperature applications, certified for IIB1, IIB2, and IIB3 explosion groups at maximum operating temperature of +150°C.
- ESA Series Flame Arresters End-of-Line Deflagration Arrester designed for short-time burn events with extended upper operating temperature limit. Features replaceable crimped-ribbon elements and incorporates E-Flow technology.
- LCA Series Flame Arresters In-Line Deflagration Arrester designed to prevent propagation of flames in piping systems. Can be designed and manufactured to meet high pressure, high temperature, and short-time burn requirements.
- LCB Series Flame Arresters In-Line Deflagration Flame Arrester designed and manufactured to meet high pressure, high temperature, and short-time burn requirements. ATEX certified for explosion groups IIB1, IIB2, and IIB3.
- DFC Series Flame Arresters In-Line Deflagration Flame Arrester specifically designed for IIC explosion group applications.
- LEA Series Flame Arresters In-Line Deflagration Flame Arrester with innovative eccentric body design that prevents build-up of liquid in wet gas applications and allows for close to ground installation.
- LEB Series Flame Arresters In-Line Deflagration Arrester designed and manufactured to meet high pressure, high temperature, and short-time burn requirements. ATEX certified for explosion groups IIB1, IIB2, and IIB3.
- DFB Series Flame Arresters In-Line Deflagration Flame Arrester with a replaceable element designed to be installed close to the potential ignition source in piping systems. ATEX certified for explosion groups IIB1, IIB2, and IIB3.
- SGE-IB Series Flame Arresters In-Line Deflagration Flame Arrester designed to prevent propagation of flames in gas or vapour mixtures. ATEX certified for explosion groups IIB1, IIB2, and IIB3.
- MB-IB Series Flame Arresters Microbore In-Line Deflagration Flame Arrester specially designed for the protection of gas sampling equipment where flammable vapours are present. ATEX certified for explosion group IIB3.
- UEA Series Flame Arresters In-Line Unstable Detonation Flame Arrester featuring the High Energy Dissipation System (HEDS), designed for IIA and IIA1 explosion group applications.
- UCA Series Flame Arresters In-Line Unstable Detonation Flame Arrester featuring the High Energy Dissipation System (HEDS), designed for IIA and IIA1 explosion group applications.
- UCB Series Flame Arresters In-Line Unstable Detonation Flame Arrester featuring the High Energy Dissipation System (HEDS) and E-Flow technology elements. ATEX certified for gases in explosion groups IIB1, IIB2, and IIB3. Suitable for unstable detonation, stable detonation, and deflagration with bi-directional protection.
- Pressure & Vacuum Relief Valves (PVRV) Comprehensive range of Pressure/Vacuum Relief Valves designed to safeguard tanks and vessels in under or over-pressure scenarios during both normal and emergency operating conditions.
Quantifiable outcome
- Up to 30% improved flow performance compared to equivalent competitor models (EVA series 150mm nominal bore)
- +1 more outcomes
Companies that use Elmac Technologies
Customer profileNamed customers10 records
Segments5 records
Ideal customer profiles3 records
Elmac Technologies technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature3 records
Elmac Technologies partnerships and signals
Strategic signalScale indicators2 records
Recent moves6 records
Expansion highlights5 records
Elmac Technologies competitors and assessment
Company assessmentDirect peers
- Protectoseal: US-based manufacturer of flame arresters, pressure/vacuum relief vents, and tank protection equipment. Now the parent brand under which Elmac operates; directly comparable product portfolio and end markets.
- PROTEGO: German-headquartered manufacturer of flame arresters, pressure/vacuum relief valves, and tank protection equipment serving oil & gas, chemical, and pharma. Closest direct competitor to Elmac across all flame arrester categories.
- Braunschweiger Flammenfilter: Specialized German manufacturer of flame arresters and detonation protection equipment. Comparable product range (end-of-line, in-line, detonation) and serves similar oil & gas and petrochemical customers globally.
- BS&B Safety Systems: Global manufacturer of explosion protection products including flame arresters, rupture discs, and explosion vents. Competes with Elmac in process safety equipment for oil, gas, chemical, and dust-handling industries.
- Enardo (Cimarron Energy): Manufacturer of pressure/vacuum relief valves, flame arresters, and tank venting equipment for oil & gas storage and processing. Direct overlap with Elmac's pressure protection product line.
- Kimray: Manufacturer of process control equipment including pressure relief valves and flame arresters for oil & gas production. Comparable specialty equipment manufacturer with overlapping oil & gas customer base.
- Shand & Jurs (Clark-Reliance): Manufacturer of pressure/vacuum relief valves, flame arresters, and tank gauging equipment. Long-standing direct competitor in pressure protection with comparable end markets in oil, gas, and chemical processing.
- Flame Arrestor Technologies: UK-based specialist manufacturer of flame arresters and explosion protection equipment. Smaller-scale domestic competitor with overlapping product offering and similar customer segments.
Broad incumbents
- Emerson Electric (Groth brand): Emerson's Groth brand offers flame arresters, pressure/vacuum relief valves, and tank protection as part of a broader industrial automation portfolio. A larger incumbent competing in the same flame arrester category.
Emerging players
- Stuvex International: Belgian manufacturer of flame arresters and explosion protection equipment. Niche European competitor focused on similar petrochemical and process industry applications as Elmac.
Market position
Strengths5 records
Weaknesses4 records
Competitive moat5 records
Key risks5 records
Key highlights6 records
Customer concentration
Elmac Technologies social profiles
Digital presenceElmac Technologies compliance and trust
Trust signalCompliance6 records
Elmac Technologies financial estimates
Financial estimateRevenue estimate
Valuation estimate
Elmac Technologies leadership team
Management profileNumber of profiles
Profiles1 record
Elmac Technologies funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Elmac Technologies 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 Elmac Technologies
What does Elmac Technologies do?
Elmac Technologies designs, manufactures, and supplies ATEX-certified Flame Arresters (End-of-Line Deflagration, In-Line Deflagration, In-Line Unstable Detonation types) and Pressure/Vacuum Relief Valves used to protect industrial tanks, vessels, and piping systems against catastrophic explosions, flame propagation, and under/over-pressure conditions. Products are custom-engineered to specific application requirements and incorporate patent-protected E-Flow, HEDS, and RE-Flow proprietary element technologies.
Is Elmac Technologies a public or private company?
Elmac Technologies is a private company. It is classified as unknown and is currently operating.
When was Elmac Technologies founded?
Elmac Technologies was founded in 1955. It employs 101 to 250 people.
Where is Elmac Technologies based?
Elmac Technologies is headquartered in Holywell, United Kingdom, in the Europe region.
How does Elmac Technologies make money?
One revenue line is on record: industrial Safety Equipment Sales.
Who are Elmac Technologies's main competitors?
Direct peers on record are Protectoseal, PROTEGO, Braunschweiger Flammenfilter, BS&B Safety Systems, Enardo (Cimarron Energy), Kimray, Shand & Jurs (Clark-Reliance) and Flame Arrestor Technologies. Emerson Electric (Groth brand) is listed as a broad incumbent. Stuvex International is listed as an emerging player.
Does Elmac Technologies have an API?
No public API is recorded for Elmac Technologies.
What industry is Elmac Technologies in?
Elmac Technologies's product category is Industrial Explosion Protection Equipment. Its primary akta.pro industry code is IMAHAEAL, Process Safety & Relief Systems (Flare Systems, PRVs, Explosion Protection), with a secondary code of BPABAHAD, Special Hazard Fire Suppression Systems (Clean Agent/Foam/CO₂/Kitchen Hood). Its NAICS code is 333413 and its SIC code is 3564.