What Glenfield Invicta does

Glenfield Invicta Limited is a UK specialist engineering and manufacturing business that designs, manufactures, refurbishes, and installs engineered valves and penstocks for critical water infrastructure. Founded in 1852 as Glenfield & Kennedy and operating under its current form since the 2019 merger of Glenfield and Invicta, the company is a subsidiary of Denmark-based AVK Holding and is headquartered in Kilmarnock, Scotland, with additional manufacturing in Maidstone, England, and a 30,000 square-metre facility dedicated to logistics, repair, and production. The company employs 60+ people and holds a unique archive of original design drawings that enables reverse engineering of legacy valves and penstocks when no current specification is available.

Its product portfolio centres on reservoir-specification gate valves (Series 54 aluminium-bronze, 100-year design life), fixed cone free discharge valves (Series 857), butterfly valves, knife gate valves, check and non-return valves, air valves, and bespoke stainless-steel penstocks up to five metres in width, designed with Finite Element Analysis. A distinctive capability is the design-to-installation service model covering specification, refurbishment, in-house manufacturing, on-site installation, and commissioning across reservoirs, dams, hydropower stations, and wastewater treatment works.

Glenfield Invicta generates revenue through three streams: one-time supply of engineered valves and penstocks; professional-services revenue from bespoke engineered site solutions; and recurring refurbishment services that extend the life of installed assets. Pricing is project-based and quote-driven. The go-to-market is direct enterprise field sales targeting UK water utilities (Thames Water, Dwr Cymru Welsh Water, Northumbrian Water, Yorkshire Water, Scottish Water, United Utilities), hydropower operators (SSE, Innogy, SIMEC Lochaber / GFG Alliance), civil engineering contractors, and specialised infrastructure customers such as BAE Systems, complemented by access to the AVK Group's product range through sister companies Orbinox, ACMO, and Anhui.

Name

Glenfield Invicta

Legal name

Glenfield Invicta Limited

Website

https://glenfieldinvicta.co.uk

Company type

Private

Founded year

1852

Operating status

Operating

Headcount range

11–50 employees

Short description

Glenfield Invicta designs, manufactures, refurbishes, and installs specialist engineered valves and penstocks for UK water utilities, hydropower operators, and civil engineering contractors, serving critical water infrastructure since 1852 as an AVK Holding subsidiary.

Ownership category

akta.pro rank

Headquarters

HQ city

Maidstone

HQ country

United Kingdom

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Valve and Penstock Supply: Supply of specialist engineered valves and penstocks for water, wastewater, hydropower and non-utility infrastructure projects. Products include gate valves, butterfly valves, air valves, free discharge valves, and bespoke penstocks. Revenue from product sales to utility companies and contractors.
2. Engineering Site Solutions: End-to-end project solutions including design, refurbishment, installation and commissioning services. Project-based revenue from complex engineering projects delivered from concept to completion.
3. Valve Refurbishment Services: Refurbishment of existing valves and penstocks including condition assessment, cleaning, shot blasting, component replacement, and recommissioning. Extends life of legacy assets with significant carbon and cost savings versus replacement.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

Glenfield Invicta designs, manufactures, supplies, refurbishes and installs specialist engineered valves and penstocks for critical UK water, wastewater, hydropower and non-utility infrastructure projects. Its portfolio covers reservoir-specification gate valves, fixed cone free discharge valves, butterfly valves, knife gate valves, check/non-return valves and air valves, complemented by bespoke penstocks and full end-to-end engineered site solutions from specification through to commissioning.

Product overview

Glenfield Invicta is a B2B provider of engineered valve and penstock solutions for critical water infrastructure. The company offers an integrated portfolio of products and services that includes specialist valves (gate valves, penstocks, air valves, butterfly valves, check valves, knife gate valves, needle control valves, float valves, and free discharge valves), complemented by engineering site solutions covering design, manufacture, installation, refurbishment, and commissioning from concept to completion. Products are primarily sourced from the AVK Group and its sister companies (Orbinox, ACMO), with Glenfield Invicta providing specification expertise, project management, and installation services. The company serves UK Water, Wastewater, Hydropower, and Non-Utility Infrastructure sectors.

Differentiator

Problem solved

Functional benefit

Products and services

• Penstocks Specialist penstock solutions for dams, reservoirs and water/wastewater infrastructure, including hand stop/stop gate, wall mounted, slide roller gate, channel mounting, weir penstock, stop logs, round and rectangular flap valves, and bespoke penstock design. Sold to UK water utilities, wastewater operators and civil engineering contractors.
• Air Valves Air release and vacuum valves for water and wastewater pipelines, with associated air valve servicing and refurbishment options. Targeted at UK water and wastewater utilities managing pipeline air issues.
• Reservoir Specification Gate Valves Specialist metal-seated gate valves (Series 54) designed for reservoir applications with 100-year design life expectancy, aluminium bronze shoes and channels, jacking screws for mechanical release, and stainless steel fasteners/stems with enhanced coatings. Sold to UK water utilities specifying reservoir assets.
• Fixed Cone Free Discharge Valves Fixed cone (Series 857) discharge valves for controlled water release and energy dissipation in reservoir drawdown applications, with multiple aerodynamic ribs connecting body to downstream cone to minimise vibration and optional bespoke hoods for confined discharge areas. Targets UK water utilities.
• Butterfly Valves Butterfly valves for water and wastewater applications, including Series 75 concentric butterfly valves. Used by UK water utilities and hydropower operators for flow isolation.
• Check and Non-Return Valves Valves that allow flow in one direction only, preventing backflow in water and wastewater systems, including recoil check valves, swing check valves, and slanted seat tilting disc check valves. Used across water, wastewater, hydropower and industrial process sites.
• Knife Gate Valves Industrial knife gate valves for isolation duty in water and wastewater applications, including large DN1000 installations for pumping stations. Sold to UK water utilities, wastewater operators and process sites.
• Metal Seated Gate Valves (Series 54 Large Diameter) Large diameter metal-seated gate valves for demanding reservoir, dam and high-flow velocity applications, including flanged Series 54 metal seated variants used in wastewater and reservoir drawdown service. For UK water utilities and hydropower operators.
• Couplings and Adaptors Pipe connection accessories used to join valves and penstocks into existing water and wastewater pipework networks. Sold alongside valve installations and refurbishment projects.
• Repair Clamps and Collars Maintenance products for repairing and sealing damaged pipework in water and wastewater systems. Used by utilities and contractors during refurbishment or emergency repair works.
• Penstock Fast-track Service Bespoke penstock design, manufacture and supply service delivered on expedited timelines for urgent project requirements. Targets UK water utilities, wastewater operators and contractors with critical-path replacement or emergency works.
• Valve Supply and Installation Service Complete supply and installation services for Glenfield Invicta and AVK Group valves and penstocks, from specification through commissioning, delivered by in-house installation teams across the UK. For water utilities, hydropower operators and civil engineering contractors.
• Engineered Site Solutions End-to-end project solutions covering specification, design, refurbishment, installation and commissioning for water, wastewater, hydropower and non-utility infrastructure projects. Includes valve refurbishment (cleaning, shot blasting, component replacement, recommissioning), reverse-engineered replacement valves, and multi-disciplinary site delivery by project and installation teams.

Quantifiable outcome

• 100-year design life achieved for reservoir valves as specified by Welsh Water
• +3 more outcomes

Named customers12 records

Segments5 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Nine partnerships are on record, tiered core and minor.

• AVK GroupcoreStrategic or Co-development PartnerParent company providing access to unrivalled portfolio of different valve types across the AVK Group. Glenfield Invicta is part of AVK's UK operations, benefiting from global engineering resources and sister companies including Orbinox (penstocks), ACMO (check valves), and Anhui (additional valve manufacturing).
• BarhalecoreImplementation/ SI/ Consulting PartnerCivil engineering contractor partnership on complex reservoir projects. Barhale undertakes civil and lifting operations while Glenfield Invicta manages valve repair works as part of collaborative multi-disciplinary team approach.
• Lewis Civil EngineeringminorImplementation/ SI/ Consulting PartnerCivil engineering contractor engaged on Alwen Reservoir refurbishment project for Dwr Cymru Welsh Water. Glenfield Invicta provided technical guidance on optimal valve selection for temporary supply pipeline.
• ESH StantecminorImplementation/ SI/ Consulting PartnerEngineering consultancy partnership on Burnhope Reservoir project for Northumbrian Water. Collaborative relationship from design through to commissioning.
• Franklyn Yates EngineeringminorImplementation/ SI/ Consulting PartnerStrategic alliance partner for challenging terrain and logistics projects. Worked with Glenfield Invicta on Dolgarrog hydro station refurbishment and Burnhope Reservoir valve installation.
• George LesliecoreImplementation/ SI/ Consulting PartnerScottish Water framework contractor partnership. George Leslie commissions Glenfield Invicta for valve refurbishment work including Munnoch Reservoir, Parkhead DSR, and Strathblane air valve projects.
• OrbinoxcoreTechnology or IntegrationAVK Group sister company and specialist penstock manufacturer. Glenfield Invicta works closely with Orbinox to deliver high quality penstocks and end-to-end solutions. Orbinox manufactured bespoke penstock for Grafham Reservoir 5-metre installation.
• Invicta ValvescoreImplementation/ SI/ Consulting PartnerAVK Group company providing site installation engineering teams. Six service engineers from Invicta's Maidstone headquarters and Kilmarnock branch undertook Dry Dock pumping station installation works.
• SSE RenewablesminorStrategic or Co-development PartnerExploratory discussions underway regarding optimal valve and penstock solutions for Coire Glas pumped storage hydropower scheme (1,500MW capacity, approximately £1bn project).

Scale indicators6 records

Recent moves7 records

Expansion highlights5 records

Broad incumbents

• Saint-Gobain PAM (Water Infrastructure): Global supplier of ductile iron pipe systems and complementary water infrastructure products for municipal networks. Adjacent peer in the UK and European water utility supply chain, competing for total pipeline and accessory specifications.
• Andritz Hydro: Global supplier of turbines, gates, and auxiliary equipment for hydropower stations. Adjacent comparable in the hydropower end market where Glenfield Invicta delivers penstocks, valves, and refurbishment services.
• Voith Hydro: Leading global supplier of hydropower equipment and services, including penstock and valve systems. Competes in the same UK and European pumped-storage and hydro-refurbishment opportunities as Glenfield Invicta.
• Mueller Water Products: Major North American provider of water infrastructure products including valves, hydrants, and pipe fittings. Comparable in end-market focus on water utilities, though more standardized versus bespoke, and operates at much larger scale.
• Crane Co. Diversified industrial manufacturer with a significant engineered valves segment serving water, wastewater, and power generation end markets. Competes on large-diameter and specialty valve specifications relevant to Glenfield Invicta's projects.
• AVK Holding: Parent group and the broader valve conglomerate that Glenfield Invicta operates within. AVK offers the full global portfolio of valves across water, wastewater, gas, and fire protection, including sister brands like Orbinox and ACMO, making it the most directly comparable incumbent at the group level.
• ITT Engineered Valves: Global industrial manufacturer supplying engineered valves to municipal water, wastewater, and energy markets. Comparable as a broad incumbent competing for large water and hydropower valve specifications across multiple geographies.

Direct peers

• TALIS Group: European specialist in valves and hydraulic works for water supply and hydropower. Comparable in serving European water utilities and renewable energy developers with engineered valve and penstock solutions.
• Orbinox: AVK Group sister company specializing in penstocks, gates, and valves for water and wastewater. Operates in the same product category (penstocks being one of Glenfield Invicta's core offerings), often delivering large bespoke penstocks such as the 5-metre unit at Grafham Reservoir.
• Ham Baker Adams: Long-established UK-based specialist in engineered valves and penstocks for water, wastewater, and hydropower infrastructure, serving the same UK utility customer base with bespoke and standard products. Highly comparable in product mix and end-market exposure.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks7 records

Key highlights7 records

Customer concentration

• Xx.com/gi_projects

Revenue estimate

Valuation estimate

Number of profiles

Profiles11 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 Glenfield Invicta