GCAL: enabling the Pharmaceutical, Agro-chem and Oil & Gas sectors to increase efficiency and capability by advancing scientific and technological know how through constant research and development.  




Our primary role is the automation of OEM machines such as centrifuge/ dryers and automation of systems such as Port/Starboard control, MEG recovery and ESD in oil and gas. We make use of PLC/DCS, HMI/SCADA, RIO and have experience of all the major suppliers - Siemens, Allen Bradley, Wonderware, Emerson, P+F , PILZ etc. Please call or mail to discuss your automation requirements.


With over twenty years experience of pharma and oil and gas sectors we are very happy to assist with process design and maximize productivity. Our filter cloth offering and recipe optimization has helped many clients to better machine use and yield improvement. Please call or mail to discuss your automation requirements.

Project Management

Execution of projects to schedule and to budget is key to ensuring our customer's objectives are fulfilled and they are entirely satisfied. At Gemini Control we develop a Gantt chart for all projects; identifying all the tasks and milestones that are crucial to project success. From the design documentation to the acceptance testing; all are covered and all are tracked.


We design and supply filter cloths for Heinkel Inverting Filter Centrifuges. Every Heinkel is different as is every product. The filter cloth is crucial to optimizing the machine. Right material, right construction (O ring, drawstring, warp, weft, multi, mono), right for slurry and wash, right for screen and rings, right for intermediates or finished goods, bespoke to the Heinkel condition; all play an important part in ensuring the right cloth is fitted. Please call or mail to discuss your Heinkel filter cloth requirements.


All our projects are executed within a GAMP and cGMP framework. Validation and a life cycle approach are very important to the Life Sciences sector and Gemini Control are highly experienced at executing projects within this environment. We offer specialist validation services and consultancy independent of our own projects. Please call or mail to discuss your control system validation requirements.


Gemini design and build control system cabinets to facilitate the automation needed of OEM and customer requirements. This includes the Drive, PLC and LOP enclosures. In addition we also design and fabricate bespoke equipment to make processes as efficient and safe as possible. These range from solids disconnects to full discharge handling systems.



Gemini Control was established by Michael Hill on returning to the U.K. from Ireland in 2005. The original company was started in 1998 in Cobh, Co. Cork. The catalyst in the beginning was a need for Heinkel centrifuge expertise with a multi disciplinary approach (control, process, mechanical) for the rapidly expanding pharma industry. We still offer that same service to this day but have expanded to include all types of centrifuges, decanters and dryers along with many other OEM machinery and into other sectors including oil and gas, aggregrates, precious metals and specialst dyes.


Gemini Control offer a full control system product for both Ex and Safe Area, GAMP and non-GAMP projects. This inlcludes the hardware, PLC/DCS software, HMI/SCADA configuration, design documentation and acceptance test protocols. We can also assist in recipe optimisation and we have designed and sold filter cloths for 20 years. In addition to these core services we also can supply fully refurbished machines with warranty for contract pharma and non pharma applications.

Please call or mail us to discuss your requirements.



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For any inquiries, questions or commendations, please call: 07921 315387 or fill out the following form

Head Office

64 Clarendon Road, Watford,

Herts. WD17 1DA


Talk to us about your requirements: 07921 315387

© 2020 Gemini Control & Automation Ltd.

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