What Rotolok does

Rotolok is a privately held UK manufacturer of rotary valves, airlocks, diverters, slide and control valves, and complementary powder/bulk handling equipment (backfill units, telescopic bulk loaders, double dump valves, NI-HARD wear components). Founded in 1973 by Dan McCauley in Bampton with a £2,000 overdraft, the company relocated to a 50,000 sq ft headquarters in Tiverton, Devon and now operates through wholly-owned subsidiaries in the USA, France, South Africa, Singapore, India, Australia, and New Zealand. Its core technology spans rotary valve and airlock design (standard, dust collector, hygienic Kleanlok, offset, blowthrough, USDA-certified, and Oddball variants) plus diverters, slide valves, iris valves, and butterfly dampers. Notable proprietary features include the Easy Release rail system, nine specialized rotor configurations, tungsten carbide bore coatings, and ATEX-certified explosion barrier technology rated to 10 bar. Manufacturing is vertically integrated via the owned Northfield Foundry and equipped with Mazak multi-pallet machining centres, robotic welding cells, and 24/7 fiber laser cutting supported by cryogenic nitrogen.

The company serves eight primary verticals — chemical, feed processing, food processing, mining & minerals, petrochemical, pharmaceutical, plastics, and power & energy — through a sales-led B2B direct-sales model with technical consultation and after-sales support. Revenue is generated from one-time hardware sales, a spares and replacement parts business, and refurbishment/inspection services, with quote-based unit pricing and no subscription or tiered public pricing. Customer evidence spans Cargill (food), FoundOcean (offshore grouting for wind/oil & gas), a major UK sustainable energy producer (framework agreement for 66 heavy-duty valves), a world-leading polyester manufacturer, Hayley Group, DDW, Gough Engineering, and various international enterprises. Certificational stack (ISO 9001:2015 with zero non-conformities in 2023, USDA Dairy acceptance, ATEX, EHEDG membership) underpins access to regulated industries. Equipment lifespans of 45-50 years (documented at Heygates and a Swedish energy plant) create a long-tail installed base feeding the spares and refurbishment annuity.

Name

Rotolok

Legal name

Rotolok Limited

Website

https://rotolok.co.uk

Company type

Private

Founded year

1973

Operating status

Operating

Headcount range

501–1,000 employees

Short description

Rotolok is a UK-based, privately held manufacturer of rotary valves, airlocks, diverters, and slide valves for powder processing and bulk material handling. Founded in 1973, it serves chemical, food, pharmaceutical, mining, petrochemical, plastics, and energy customers globally through eight subsidiaries.

Ownership category

akta.pro rank

Product category

Industrial Valve Equipment for Bulk Material Handling

NAICS

Industrial Valve Manufacturing (332911), Other Metal Valve and Pipe Fitting Manufacturing (332919), Other General Purpose Machinery Manufacturing (3339)

SIC

Pumps & Pumping Equipment (3561), Wholesale-Machinery, Equipment & Supplies (5080)

akta.pro primary industry

Seals, Valves & Auxiliary Components (for Pumps/Compressors) (IMAHANAH)

akta.pro secondary industry

Filling & Dosing Equipment (Liquid, Powder, Aseptic) (IMALAOAB)

Keywords

• Rotary valve manufacturing
• Bulk material handling
• Powder processing equipment
• Pneumatic conveying valves
• Industrial airlock valves

Headquarters

HQ city

Tiverton

HQ country

United Kingdom

HQ region

Europe

Offices5 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. Industrial Valve Equipment Sales: One-time hardware sales of rotary valves, airlocks, diverters, slide valves and other powder handling equipment. Products range from standard models to custom bespoke solutions. Large valves up to 915mm bore with capacity exceeding 580m³/hr.
2. Spares and Replacement Parts: Supply of spare parts including bearings, blades, gland packing, gearmotors, bareshaft replacement units. Maintains extensive stock inventory for quick delivery.
3. Refurbishment and Inspection Services: Inspection and refurbishment services for existing equipment. Extends equipment life and maintains performance.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels4 records

Core offering

Rotolok manufactures and supplies rotary valves, airlocks, diverters, and slide/control valves for powder processing and bulk material handling industries. Products regulate flow of dry powders, pellets, and granules between chambers while maintaining airlock conditions, available in standard and custom bespoke configurations across cast iron, stainless steel, and carbon steel. The company also provides spares, replacement parts, and refurbishment/inspection services for installed equipment.

Product overview

Rotolok is a manufacturer of industrial valves and bulk material handling equipment, offering a comprehensive product portfolio organized into four main categories: Rotary Valves & Airlocks (including standard rotary valves, dust collector valves, hygienic Kleanlok valves, offset valves, USDA-certified valves, and specialty valves like Easy Clean and Easy Release); Diverters (including pneumatic conveying diverters, manual diverters, gravity diverter valves, plug diverters, and weigh valves); Slide & Control Valves (including fabricated slide gate valves, cast slimslide, cast rotoslide, butterfly dampers, and iris valves); and Other Products (including backfill units, telescopic bulk loaders, Blo-Line couplings, double dump valves, NI-HARD wear components, and Rotospeed switches). The company serves industries including chemical, feed processing, food processing, mining & minerals, petrochemical, pharmaceutical, plastics, and power & energy. Products are available in various materials including cast iron, stainless steel, carbon steel, and specialty alloys with ATEX certifications for hazardous environments.

Differentiator

Problem solved

Functional benefit

Products and services

• Rotary Valve Industrial rotary airlock valve regulating flow of dust, powder and granular products between chambers while maintaining airlock conditions, with standard pressure differentials to 20 psi and temperatures to 400°C. For industrial powder and bulk handling applications.
• Dust Collector Valve Lighter-duty rotary valve for dust collection applications with pressure differentials of 3 psi or less. Available in Standard and Heavy Duty versions in 150-300mm sizes.
• Easy Clean Rotary Valve Rotary valve designed for quick cleaning and minimal downtime with easy access to internals for hygiene-critical applications.
• Easy Release Rotary Valve Rotary valve with proprietary rail system enabling easy slide-out of rotor for cleaning and maintenance by a single person.
• Hygienic Rotary Kleanlok Cast stainless steel hygienic rotary valve with stainless steel rotors and fully machined internal and external surfaces for food, chemical, and pharmaceutical industries.
• Offset Airlock Valve Offset rotary valve for handling pelletised or granular products that have potential to jam standard rotary valves, preventing product degradation.
• Blowthrough / Blowing Seals Rotary valve configuration with integral conveying trough and blow port connections for introducing product into pneumatic conveying lines.
• USDA Rotary Valve USDA Dairy Accepted rotary airlock certified for sanitary applications in food, dairy, pharmaceutical, and chemical industries. 316 Stainless Steel contact surfaces polished to 150 grit finish with slide rail mechanism for quick rotor removal.
• Oddball Rotary Valves Non-standard or custom-configured rotary valves for specialized industrial applications.
• Pneumatic Conveying Diverter Flap, plug, and weigh diverters for pneumatic conveying industry to re-route powder, pellets, or granules between discharges.
• Manual Conveying Diverter Manual-operated diverter valve for controlling material flow direction in pneumatic conveying systems.
• Gravity Diverter Valve Diverter valve for gravity flow applications to redirect bulk materials between discharge points.
• Plug Diverter Plug-style diverter valve for material diversion in pneumatic conveying systems.
• Weigh Valve Diverter valve designed for weighing applications in material handling systems.
• Fabricated Slide Gate Valve Fabricated slide gate valve for controlling powder, pellet, and granule flow in industrial conveying systems.
• Roundhead Valve Specialized control valve for powder and granular material handling applications.
• Cast Slimslide Cast slide control valve designed for handling powders, pellets, and granules across a wide field of applications.
• Cast Rotoslide Rotary slide valve for industrial material flow control applications.
• Butterfly Dampers Butterfly valve dampers for controlling airflow and material flow in bulk handling systems.
• Iris Valves Slimflex iris valves for adjustable flow control, available in standard and custom sizes up to 500mm diameter.
• Backfill Units Heavy-duty backfill units with balanced impeller rotating at up to 900 rpm for filling containers with powdered or pelleted product at rates up to 60,000 KG/hour.
• Telescopic Bulk Loaders Telescopic loader for controlled and safe loading of free-flowing materials into open top containers, lorries, and ships with fully enclosed product fill and air return pathways.
• Blo-Line Couplings Couplings for connecting bulk handling equipment in material transfer systems.
• Double Dump Valve Double flap valve for controlled discharge of dry dust, powders, granules, and fibrous materials while maintaining effective airlock seal.
• NI-HARD Wearback Corner Abrasion-resistant NI-HARD wear back pipe with easily replaceable components for mining and mineral applications.
• NI-HARD Plain Bend Corner Abrasion-resistant plain bend corner component for abrasive material handling in mining and minerals processing.
• Rotospeed Switch Speed monitoring unit for monitoring rotational movement of rotary valves and alerting operators when speed falls below preset levels. Extended mounting options available for high temperature applications.
• Spares and Replacement Parts Supply of spare parts including bearings, blades, gland packing, gearmotors, and bareshaft replacement units with extensive stock inventory maintained for quick delivery.
• Inspection and Refurbishment Services Inspection and refurbishment services for existing Rotolok equipment, extending equipment life and maintaining performance.

Quantifiable outcome

• 65+ specialist Heavy-Duty Rotary Valves operating successfully in biomass applications with reduced maintenance and extended equipment lifespan
• +6 more outcomes

Named customers15 records

Segments8 records

Ideal customer profiles6 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Two partnerships are on record, tiered core.

• FoundOceancoreStrategic or Co-development Partner · 16 February 2023FoundOcean is the largest dedicated offshore construction grouting company in the world, specializing in securing structures to seabed for offshore wind farms and oil & gas platforms. Rotolok supplies rotary valves to FoundOcean's cement mixing systems incorporated within transportable container and DNV offshore lifting frame equipment. Valves must withstand abrasive cement products and challenging marine environments.
• BOCcoreStrategic or Co-development PartnerBOC supplies industrial gases including liquid nitrogen for Rotolok's cryogenic vessel installation. 10,000 litre cryogenic vessel with timed changeover vaporiser provides up to 200m³/hr flow rates of gaseous nitrogen supporting 24/7 operation of upgraded fiber laser cutting machine.

Scale indicators8 records

Recent moves10 records

Expansion highlights6 records

Direct peers

• WAMGROUP: Italy-headquartered global manufacturer of bulk material handling equipment including rotary valves, screw conveyors, and dust collectors. Closest direct competitor to Rotolok in rotary valve/airlock products serving the same food, chemical, plastics, and feed processing verticals with comparable global footprint.
• Coperion (formerly Schenck Process): Global leader in compounding, extrusion, and bulk material handling including rotary valves and airlock feeders. Directly competes with Rotolok in plastics, chemical, and food-grade powder handling applications and offers comparable ATEX-certified and sanitary rotary valve product lines.
• Brabender Technologie: German manufacturer of rotary valves, dosing feeders, and loss-in-weight feeders for powder and bulk solids. Highly comparable niche specialty competitor serving similar chemical, food, and plastics customers with engineered volumetric and gravimetric feeding solutions.
• AZO GmbH: German specialist in automated raw material handling systems for food, plastics, chemical, and pharmaceutical industries. Directly comparable to Rotolok through its rotary valve and diverter valve offerings integrated into pneumatic conveying and batching systems.
• Flexicon Corporation: US-based manufacturer of bulk handling equipment including flexible screw conveyors, pneumatic conveying, and rotary valve airlocks. Competes with Rotolok across food, chemical, and pharmaceutical verticals with overlapping rotary airlock and bulk handling product portfolios.
• Zeppelin Systems: German-headquartered bulk material handling systems provider serving plastics, chemical, and food industries with rotary valves, silos, and pneumatic conveying systems. Operates as a comparable specialty competitor to Rotolok in turnkey bulk handling solutions.
• National Bulk Equipment (NBE): US manufacturer of bulk material handling systems including rotary valves, screw feeders, and conveyor equipment. Direct competitor to Rotolok in food, chemical, and pharmaceutical bulk handling applications with similar custom-engineered equipment orientation.
• Dynamic Air: US designer and manufacturer of pneumatic conveying systems and components including rotary airlock valves and diverters. Closely comparable to Rotolok in powder and granular material flow control for chemical, plastics, and food processing applications.

Broad incumbents

• Hosokawa Micron Group: Larger global player in powder and particle processing with broad portfolio including milling, classification, mixing, and containment alongside rotary valves. Comparable to Rotolok's powder processing focus but at significantly greater scale and broader technology scope.
• FLSmidth: Large Danish multinational serving mining and minerals processing with valves, feeders, and bulk handling equipment as part of broader cement and minerals plant portfolios. Overlaps with Rotolok's mining & minerals and heavy-duty rotary valve products but at vastly greater scale and broader scope.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/RotolokGroup
• Facebookfacebook.com/RotolokGroup
• LinkedInlinkedin.com/company/the-rotolok-group

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles12 records

Subsidiaries12 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 Rotolok