Engineering Site Services



Invicta Valves Site Solutions
Our site solutions offer provides a bespoke and comprehensive ‘one-stop shop’ approach to our customers projects.

Our extensive, solution based packages are designed to combat the challenges that our UK Water Industry clients face on a daily basis. From feasibility and life-time maintenance, inception to completion, we provide a service that offers best practice, cost efficiency and longevity no matter where you are in the UK.

Our highly skilled, knowledgeable and qualified site personnel have a wealth of experience in delivering a diverse range of bespoke solutions from innovative design concepts to managing complex installation programmes and we will have the right solution for you.

We install all makes of ‘free-issue’ valves and penstocks, offer complete design, supply and installation package if required. Strongly supported by our parent company, AVK Group, we have full access to the extensive range of high quality AVK products that can be delivered anywhere in the UK from our national distribution centre.

Invicta   Maidstone : +44 01622 754613

All Invicta personnel carry relevant qualifications and are fully site certified.

      Click here for the AVK_UK_Invicta_Valves website

We offer a complete range of value added site solutions encompassing:-

  • Penstock supply and installation
  • Valve repair, refurbishment and replacement
  • Valve supply and installation.
Within these 3 services we also provide:
  • Site surveys and health checks
  • Inspection
  • Design
  • Small civil engineering installations
  • Supply
  • Design and manufacture of ancillary equipment
  • Scheduled maintenance and servicing contracts


  • Supplementary electrical services
  • Commissioning
  • Post contract training


  • Penstock Supply and Installation

    Invicta Valves has established a reputation within the UK Water Industry of being the ‘go to’ solution provider for penstock supply and installation. This deserved reputation has been achieved by ensuring that not only is the right solution chosen at inception stage, but that the right product is installed correctly, avoiding costly delays and frustrating call backs for problems with leakage or faulty operation. Although one of the simplest types of valves used in the UK Water Industry, penstocks are notoriously difficult to install. Our fully certified Site Engineers have the expertise and knowledge to deliver an installation and maintenance service for any penstock, but will preferentially select from AVK Group’s range of high quality penstocks should a supply and installation package be required. The Penstock Supply and Installation Service Offering Includes:   •  Design Input  •  Associated Ancillaries  •  Testing •  Site Audit •  Installation and Actuation •  Maintenance •  Product Selection •  Commissioning •  Extended Warranties Call our industry specialists for advice about your Penstock project, installation or product recommendation. Tel: +44 (0) 1622 754613      Email: sales@invictavalves.co.uk

  • Valve Repair and Refurbishment

    Invicta Valves has successfully repaired and refurbished valves on numerous projects in the past thirty years and our reputation is such that we are considered ‘specialists’ by UK Water Companies and their delivery partners. Key to our expertise is a long association with valves of all descriptions including gate, butterfly, check and knife gate to name a few. As a result, we are frequently called upon to inspect and recommend a resolution for a whole range of valve related issues including defective installation, operational failure, frost damage and leakage. We often find that repair and refurbishment solutions are more cost effective for our clients than replacement and we can provide these either in-house or on-site depending upon the prevailing circumstances. Where complete replacement is necessary we will preferentially select from AVK Group’s range of high quality valves. Actuators and related ancillaries are included within the scope of our service offer. The Valve Repair, Refurbishment and Replacement Service Offering Includes: •   Feasibility Studies  •  Bespoke Pipework and Actuation •  In-House or On-Site Service •   Design Input •  Ancillaries Tel: +44 (0) 1622 754613, Email: sales@invictavalves.co.uk

  • Valve Supply and Installation

    Invicta Valves provides a complete supply and installation service for both our own range of valve products and those of AVK Group. This provides our customers with a single source solution that offer many benefits such as considerable cost savings, minimal plant shutdowns, reductions in site programmes, long term solutions and extended warranties. We offer installation on a wide range of valve products including gate, butterfly, check, knife gate and plug to name a few. Our Site Engineers are fully certified, qualified and experienced and with our team you can expect solutions, not only products. The valve supply and replacement service offering includes:  •  Site Surveys •  In-House Fabrication Service •   Commissioning •  Design Input •  Ancillaries • Supply and Installation •   Service and Maintenance Tel: +44 (0) 1622 754613    Email: sales@invictavalves.co.uk

  • Lee Tunnel Case Study

    The Lee Tunnel also known as the East Ham to Stratford deep tunnel, is a tunnel for storage and conveyance of sewage mixed with rainwater The tunnel is part of the Thames Tideway Scheme and runs from Abbey Mills Pumping Station down to Beckton Sewage Treatment Works under the London Borough of Newham. A £635 million project began in 2010 to prevent more than 16 million tonnes of sewage mixed with rainwater from overflowing into the River Lee each year, through capturing it and transferring it to Beckton STW, which has been expanded by 60 per cent to enable it to deal with the increased volumes. In 2013, Invicta Valves was awarded a £1.5 million contract to supply and install 19 actuated penstocks and 12 flap valves at Abbey Mills and Beckton STW, working for MVB Joint Venture over an 18 month period on both new and existing structures. In 5 locations, Invicta conducted site surveys to establish dimensions on existing structures in order to compare them with original Thames Water drawings before procuring bespoke penstocks from the preferred manufacturer. In all, more than 100 drawings were prepared by Invicta’s Site Engineers for review with MVB JV and Thames Water The penstocks installed were amongst the largest in the UK at up to 4.8m x 5.2m and through involving Invicta at an early stage MVB JV and Thames Water were able to find long term solutions to these notoriously difficult applications and thus benefit from considerable cost savings, minimal plant shutdowns and extended warranties. The actuation for the largest penstock was re-designed by Invicta saving £40k in cost alone. We have a wealth of experience and success in giving our customers a wide range of benefits and offer a complete range of site support services that provide value added solutions.  Call our industry specialists for advice about your project, installation or product recommendation. Tel: +44 (0) 1622 754613      Email: sales@invictavalves.co.uk

  • Worcester Sewage Treatment Works

    The Worcester Sewage Treatment Works (STW) has been subject to a £4.5 million upgrade project during AMP6 in order to improve its facilities. The project was divided into four schemes covering processes such as new sludge dewatering and handling facilities and will provide several benefits including improving handling capability and the replacement of malfunctioning equipment. Invicta Valves were engaged by Costain on behalf of Severn Trent Water to supply and install valves and pipework for two primary settlement tanks (PST’s) in chambers at Worcester STW, whilst they remained operational. This project would prove extremely challenging due to the corroded condition of the existing equipment and the confined space in which the work would be carried out and several companies had already declined to be involved. However, after carrying out a difficult diagnostic survey in an 8m deep chamber, Invicta’s Site Engineers were confident that the work could be undertaken safely and that they could design a package that would provide a long term solution with minimal plant shutdown and within a week, Risk Assessment Method Statements (RAMS) were prepared. Working in close collaboration with Costain and Severn Trent to isolate and over-pump the chamber, Invicta removed the existing equipment before installing new AVK gate valves and Orbinox knife gate valves and penstocks, along with associated pipework and ancillaries fabricated at their in-house workshop (see top  image). Invicta completed the project to the utmost satisfaction of Severn Trent Water and received a written commendation from Costain’s Site Agent, Andy Mountford, which has helped them to secure further work at their AMP6 CiM6 joint venture with MWH.  Call our industry specialists for advice about your project, installation or product recommendation. Tel: +44 (0) 1622 754613     Email: sales@invictavalves.co.uk

  • Quality Workmanship and Solutions

    Quality Workmanship......Long Term Solutions From Invicta's roots as an independent valve and actuator stockist/distributor to becoming a proud and valued member of the globally renowned AVK Group, Invicta have built a reputation of ‘listening to’ and ‘hearing’ what their customer’s requirements are, before delivering them to the highest quality of workmanship and customer service and, always to their full satisfaction. In-house fabrication and ancillaries Invicta provides in-house design and manufacture of a varied range of ancillary equipment including: • Headstocks, • Extension Spindles, • Bracketry, • Fabrication, • Hydrostatic Valves Accreditations Invicta holds the following Accreditations: • ISO 9001:2008 • ISO 14001:2004 • OHSAS 18001:2007 • Achilles UVDB Verify • International Accreditation Forum (IAF) • National Accreditation Board (ANAB) People Our people are key to not only the successful delivery of the Site Solutions service offering but also to the overall success of our business. We are committed to providing the most highly skilled, customer focused and trained work force, ensuring that client demand and expectation is not only met, but is exceeded. This commitment is common throughout our business and Parent Company AVK Group. One of our Customer Promises is to expect solutions, not only products. All employees undergo regular Performance and Personal Development reviews, where training and qualification requirements are identified, enabling the business and the individual to flourish, grow and achieve their objectives. Quality, Health and Safety and Environment Our quality ethos from project inception to completion is not limited to the service or product itself, we embrace the entire process, from the early specification to the implementation and after-sales. Quality is not the result of a single link in the chain – it is the sum of all steps. One of our customer promises is to expect quality in every step. The company is ISO 9001:2008 accredited. The business is committed to providing environmentally sustainable solutions. We endeavour to reduce our impact on the environment at all times, by conducting risk assessments and monitoring our performance. The company is ISO 14001:2004 accredited. The health and safety of our people, visitors to our projects and all stakeholders are paramount to us. We have established robust procedures and processes that minimize risk and ensure that everyone recognizes their responsibility for safe working practices at all times. The company is OHSAS 18001:2007 accredited. Call our industry specialists for advice about your project, installation or product recommendation. Tel: +44 (0) 1622 754613 Email: sales@invictavalves.co.uk

  • Case Studies - Engineered Solutions

      BYPASS VALVES AND PIPEWORK LOCATION : ELMER DATE COMPLETED : AUGUST 2015  The job required the supply and installation of valves and pipework for a bypass arrangement for a backwash system at a water treatment site. The customer needed the bypass arrangement to enable them to service the actuated flow control butterfly valve without having to isolate the flow to the system.     DAM BOARDS - 7 DAYS - DESIGN, MANUFACTURE, INSTALL LOCATION : BECKTON DATE COMPLETED : SEPTEMBER 2015  With a seven day timescale to meet, the project was to design, supply and install six fabricated steel dam boards to isolate a section of aeration lanes in a waste water treatment plant. An additional consideration was to complete the project around other work being carried out in the aeration lanes. As specialists in this field, Invicta Valves met all the criteria and the seven day deadline was achieved.       110 PENSTOCKS - SUPPLY, INSTALL AND REFURBISH LOCATION : BECKTON DATE COMPLETED : ON-GOING A complete solution package. 110 penstocks were supplied and installed to replace existing penstocks, flap valves and dam boards. Special extension spindles and brackets were designed and manufactured in Gr 316 stainless steel to connect the various penstocks and disc flushing valves up to the operating levels. All the necessary equipment required to carry out the installation was also supplied       GATE VALVE REFURBISHMENT IN SITU LOCATION : ROUNDHILL DATE COMPLETED : 2013  The challenge of this project was to refurbish five gate valves with actuators in situand involved the stripping down, actuator removal and the addition of a manual gearbox - all in a very tight deadline.   The valves created an additional challenge having table “D” flanges and being in very tight installation conditions. During the project the valves were also converted from electric to manual actuation to improve the ease of operation and to make them more cost effective.     HEALTH CHECK LOCATION : CHERTSEY DATE COMPLETED : 2010 The project: To carry out a health check survey, report on the condition of the valves and supply a recommendation to either overhaul or replace the valves.   The valves were located in confined space areas making it difficult to identify old equipment.       YSTRSDFELLTE DAM AND SPILLWAY LOCATION : BRECON BEACONS NATIONAL PARK DATE COMPLETED : AUGUST 2015 As a result of an inspection on the reservoir in 2011, under the Reservoirs Act, it was found that the spillway had insufficient capacity by modern standards.   The valves were located in confined space areas making it difficult to identify old equipment.   The only way to control these flows and provide sufficient energy dissipation was to install a free discharge valve, and a Glenfield Series 857, DN900, met the Dŵr Cymru - Welsh Water specification.   The valve and hood were delivered in May and commissioned in August 2015. Glenfield Valves engineers were on-site to supervise the successful commissioning of the valve.  

  • AVIT Installation Tracker

      THE NEW ASSET MANAGEMENT SYSTEM* FROM AVK UTILISING A NEW PURPOSE BUILT, USER FRIENDLY MOBILE APP & WEB PORTAL. AVK Valve Installation Tracker uses a QR code platform, designed to give full traceability of your assets providing the data on each installed valve, and gives the opportunity to review the quality of the installation. This combined with a unique GPS pin location and a picture of each installation ensures that you have a complete, accurate and auditable record of very valve installed. Furthermore, all the data recorded can be exported into standard data formats for integration into the clients existing mapping systems. * Patent pending.  The app   FULL TRACEABILITY IN A FEW SIMPLE STEPS... The QR code is generated when the valve successfully passes all the relevant test procedures. It assigns a unique serial number for the product which is linked to the full material and test records. When installed the data record becomes complete from raw material to accurate position and application.         Download the app Scan the code Set the location Take the illustration picture The portal