12 Blenheim Way
Bristol BS20 6YY

01275 843653
sales@dandn-ltd.co.uk

Speciality Gas Piping Installation

What Our Customers Say...

"After setting up the cleanroom in our new factory location, we had to rethink the compressor fed plastic piped cleanair blow off system. It was decided to use a high purity liquid nitrogen gas raising solution feeding a network of high grade stainless steel pipe work (a network that could be expanded and added to when the need arose) a daunting task as we were in full production. So whoever undertook the work would have to complete it in a fully functioning cleanroom without any mess. D & N were recommended to us as a company that could carry out such work.

They promptly arrived and suggested a number of layouts tailored to our requirements and budgetary constraints. After all agreeing on a proposed plan, the work was carried out swiftly and with a minimum of disruption, often working unsociable hours during the weekend. I was greatly impressed by their high standards of workmanship even rejecting materials supplied to them that didnít meet their exacting standards. I therefore would have no hesitation in recommending D & N to anyone who wished to contract them for such work."

Mike Wilde, Coatings Manager, Gooch and Housego, Ilminster, Somerset


"D & N carried out a comprehensive risk assessment as part of our project feasibility studies. The level of detail and professionalism displayed were excellent. The risk assessment was performed very efficiently and offered unrivalled value for money. I would thoroughly recommend them."

Dr Antulio Tarazona, MD Echerkon Technologies Ltd.


"D and N were asked to chair a HAZOP of our proposed gas distribution system upgrade. They listened carefully to the functionality that was required from the system and created a comprehensive listing of the major sub systems (nodes) that our P and ID could logically be reduced to. D and N prepared the HAZOP listing for each node and then chaired the HAZOP meeting, with our key engineering, production and safety personnel over three very productive days.

During the HAZOP D and N used their extensive knowledge of applicable legislation and standards, (including Semi standards) to ensure that our system would comply with current legislation. D and N did not simply highlight non-compliance, but drew on their experience to suggest design changes which resulted in higher system integrity, with little increase in cost.

I believe that our project benefited greatly from the legislative and practical experience that D and N bring to a HAZOP. Their costs are extremely reasonable, and in our case their recommendations resulted in a higher quality, safer and more flexible system and I would thoroughly recommend them."

Mike Gardiner, Manufacturing Engineer, Heatric division of Meggitt (UK) Ltd

Any views expressed by D and N do not necessarily represent the views of Heatric. Heatric takes no liability whatsoever for any loss or damages occurring as a result of any decisions taken on the basis of the information given above.


"D & N offered a professional, courteous and cost-effective service and the work was completed on schedule. Excellent communications, attention to detail and the use of the highest quality components made for a smooth installation of pipework into our clean room while working around the daily research activity which continued uninterrupted. Highly recommended."

Chris Coath, Bristol University


"D and N's involvement in our project began at a time of great discussion between the various contractors over the appropriate methodology to pipe compressed gases such as acetylene, argon and helium around our facility to point of use. D and Nís provided technical expertise that enabled a solution to be quickly found that met the exacting standards of our organisation. Following the design proposal, D & N performed an excellent installation working to a challenging timescale. Due to the high quality service at all stages I have absolutely no hesitation in recommending D and N to any one requiring a similar installation."

Dr John Newland, Production Manager, BASF


"D and N Installation and Design Ltd provided a bespoke high pressure pipework installation for Cardiff University's Gas Turbine Research Centre (GTRC). The work conducted by D&N was integral to the success of a new five component gas mixing facility that was being installed at the site for future research in the areas of alternative gaseous fuels for power generation gas turbines. I would definitley work with D&N again and would be happy to recommend them to a third party."

Steve Morris, Facility Manager, GTRC


"For a recent installation of a complex gas manifold for our new diamond CVD apparatus we obtained quotes from five suppliers including D&N Installation and Design Ltd. Not only were D&N the most competitive of all the quotes, they also offered the shortest lead-time. We also found that D&N were offering far superior components (in our case orbital welded VCR connections vs compression fittings).

On site we found Darren and his team to be highly professional, flexible and polite. For example, a recent operator error (nothing to do with D&N) resulted in one of our gas lines becoming contaminated. Darren replaced this quickly and efficiently at a far lower cost than we expected. This resulted in a substantial reduction in our downtime. I would strongly recommend D&N to anyone considering such installations and would be happy to exhibit his work at our site."

Dr Oliver A Williams, Cardiff School of Physics and Astronomy.

Speciality gas pipework installation

Providing gas distribution systems across all sectors of industry including the manufacturing industry.

Specialist Gas Pipework Installers