Derwent James Ltd

Dopak sampling systems exclusive UK representatives.

Derwent James Ltd were established in 2009 by Neil Finney as the exclusive UK representatives for Dovianus BV the Netherlands based manufacturer of Dopak closed vent sampling systems. Since then Derwent James Ltd have agreed additional partnerships with leading manufacturers of chemical process safety equipment.

Chemical hoses

We are UK representatives for Elaflex who are a German manufacturer of engineered hose assemblies & hose couplings extensively used in the petroleum industry with applications and installations in many other industry sectors worldwide, complementing this is a Swedish manufacturer of dry break hose couplings.

Pressure regulating & control valves

Additionally we represent a UK based specialist manufacturer of pressure regulating and control valves with experience in many sectors supplying very high accuracy regulating valves.

Mechanical interlocks and lockout tagout safety equipment

Finally we represent a supplier of mechanical valve interlocks and lockout tagout safety equipment. We are able to arrange both equipment supply and expert advice on lockout tagout procedures form yoru factory or installation.

Chemical process safety equipment is our area of speciality and we can call on the vast knowledge and experience of our partner companies to ensure the product you select is the right product for your application.

2016 is an exciting time for us at Derwent James with a great team of partner companies supplying chemical process safety equipment, all keen to further develop long term relationships with key businesses in the process industry in the UK and worldwide so follow us on Linkedin, Facebook and Twitter for updates.

Your interest in Derwent James Ltd chemical process safety equipment is important to us so do get in touch and if you feel we can help then we will be happy to discuss your application in more detail. Finally some references from our satisfied customers;

I worked with Neil for the supply of sampling systems from Dopak. I highly appreciated his competence, professionalism and courtesy” – Associate consultant

Neil provided excellent support during a number of projects. Neil helped the project team select, supply, install and successfully commission a number of new sample systems”. – Process Engineering Senior Manager

Neil worked well with me to fully understand my needs as a customer and develop a solution which worked right first time”. – Plant Process Engineer

Neil provided us with a first class service. He got us the information we required, went out of his way to increase our knowledge of the systems and gave us confidence”. – Piping Materials Engineer

I have no hesitation in recommending Neil whose knowledge of sampling systems enabled a number of projects to be completed ahead of time and well within budget”. – Senior Project Manager

If you have any questions or need more information then do get in touch:



13 Littledale Close Oakwood Derby DE21 2TS United Kingdom



Neil Finney, Director
Neil Finney, Sales