At Assentech Limited we supply a broad range of products relating to the storage, processing and transfer of fluids.

By supplying high-quality products and a service to match, we ensure that your selection is hassle free, compliant and offers value throughout the life of the product.


Sizing and Selection

Since none of the equipment we supply is ‘off the shelf’, we offer valuable assistance with sizing and selection to ensure the product you buy matches your application.


We are selective about who we work with and the equipment we sell has been selected based upon the quality of the individual products and the integrity of the manufacturers. All products are supplied in line with ISO 9001:2008 and you can read more about our suppliers in brands.


We have longstanding links to the manufacturers we work with and offer a full package of support for every product we offer. We want our customers to work with us long term and are pleased to offer continued service and technical support.

Standards & Approvals

We ensure that the product you buy has the relevant approvals, be it ATEX, PED or ASME.


We install all of the products we offer – for more details see our services section.


We offer a maintenance service for all of our products to ensure that they keep performing to the same high standard  – for more details see our services section.


We supply and hold spares to support our product portfolio.  If you require a spare part, please look within our spare parts section or feel free to contact us for further information.


We pride ourselves on being open and honest with everyone we deal with. This applies not only to our customers but to our suppliers, associates and competitors.

Independent Product Reviews 

If you are looking for a product but are confused by what’s available, we are happy to carry out an independent product evaluation of the products available. Our expertise in process engineering and product testing stands us in good stead to compare a variety of devices and recommend the best selection for you. This is a service we have provided for customers on a number of occasions and proves a cost effective alternative to sourcing products yourself. You can find out more about this in our services section.


If you are unable to find the product you were looking for, please don’t hesitate to get in touch – if we can’t provide it ourselves we almost always know of someone who will be able to help you.




❝ Some of our customer testimonials ❞



Emergency-Relief-Valve-Pilot-Operated-2500a  Assentech- pilot operated pressure relief valves service and calibration

❝ After conducting a Third Party Witness Inspection, I was most impressed with Ewart and his team, their professionalism, and product knowledge I found to be excellent.

Ian Johnston

Director, RAK Inspection

Emergency-Relief-Valve-Pilot-Operated-2500a  Assentech- Geodesic Dome Installation

❝ Assentech were subcontracted to assemble and install a 25m geodesic dome for Shaft G on the Lee Tunnel project. My experience with Assentech from pre-contract through to assembly has been very positive. Unlike other subcontractors I have experienced on this project, Assentech had a very positive attitude to producing the level of documentation required for a project of this scale. Leading to a high quality pre construction packaged approved in a timely manner. The communication regarding the manufacturing process was first class allowing us to easily plan our works and prepare the site. Dome assembly was carried out very efficiently and completed to programme. The task was correctly resourced and well supervised. The work force had a positive attitude and carried out the task safely. In summary from my perspective it has been a very easy subcontract to manage with a high quality finished product.❝

Robert Colthorpe

Site Agent – Lee Tunnel Project, Morgan Sindall

Emergency-Relief-Valve-Pilot-Operated-2500a  Assentech wins supplier excellence award from Eastman Chemicals

❝ We were extremely pleased with the level of service and professionalism demonstrated by Assentech, right from our initial enquiry, through delivery and post installation. As a recipient of only two of these awards made by Eastman Chemical Company in the UK, based on performance in 2014, Assentech are rightly proud of their achievements.❝

Robert Dodgson

TH3 Project Procurement Lead, Eastman Chemical Company

Emergency-Relief-Valve-Pilot-Operated-2500a  AssentechIFR Installations at Vopak, Teesside

❝ As you said “you delivered what it said on the tin”. On time and on budget.  Your up front engineering to determine the suitability of your product for our application was second to none, i have not seen anyone else in the industry pay as much attention to detail before you get the purchase order number as Assentech. ❝

Garry Lee

Project Manager, Navigator (formerly Vopak Limited)

Emergency-Relief-Valve-Pilot-Operated-2500a  AssentechIFR Installations at Vopak, Teesside

❝ Assentech have supported our Navigator Terminal (formerly known as Vopak Teesside) on two important ~
projects by providing technical assistance and supplying and fitting a total of 11 Internal floating roofs. Both projects have been completed on schedule and on budget. Assentech have provided an excellent level of experience and front end engineering support with high quality drawings and documentation. Their specialist on site labour have worked collaboratively with us and Assentech have proven to be open, honest and flexible partners.
We have experience of both their Heavy Duty Pontoon type and Full Contact IFR’s and we continually monitor operation and performance of all lFR units Installed on site and consider the Assentech supplied Matrix brandto be the best in the market with exceptional build quality and rigidity. Our clients have inspected the installations and have always remarked upon the build quality and have been impressed with their strength in fully supporting up to four people without noticeable deformation. The design and construction of their stainless steel shoe seals continue to prove to operate excellently with no noticeable reduction in performance or flotation ability over the time since Installation.
Assentsch have proven to be extremely competitive on price and their installation and inspection activities have always been thorough. Navigator therefore have no hesitation in recommending Assentech to other companies considering their services.❝

Brian Beddow

Project Manager, Navigator Terminals Seal Sands