Bristol Fluid Systems trading as Swagelok Bristol
Direct employees
Turnover (reported)
Regional Markets
Nuclear Contracting Tiers
Tier 3: Original Equipment Manufacturing Organisations


  • 10-CFR-50-app B
  • Achilles UVDB Verify Cat A
  • Achilles UVDB Verify Cat B
  • Achilles UVDB Verify Cat C
  • Achilles UVDB Verify Cat D
  • ANSI
  • ASME
  • ASME / N
  • ASME / NA
  • ASME / NPT
  • ISO 14001
  • ISO 9001
  • ISO 9001:2015
  • NQA-I
  • RCC-M

Bristol Fluid Systems trading as Swagelok Bristol

Instrumentation & Control Equipment

Nuclear and Industrial Fluid Supplies and Services


Swagelok Bristol understands the pressures you face. We can help you meet the immediate and long term demands of the nuclear power industry safely, reliably, responsively, with the confidence that the products you choose are designed specifically for your applications.

Through our dedication to quality products and reliable services, Swagelok Bristol will help you improve equipment and system performance, reduce expensive operational downtime, and minimise risk to workers from less exposure time. Our focus on As Low As Reasonably Achievable or As Low As Reasonably Practicable (ALARA / ALARP) dose reduction protocols also decreases workers' exposure times.

By using Swagelok Bristol's products and services you can achieve the following:

* 83% reduction in exposure time by utilising Swagelok tube fitting installation instead of manual welding onsite
* 75% reduction in exposure time from using Swagelok Bristol's Custom Solutions Turnkey Connections - 5 Turnkey Connections versus 20 Onsite Connections (ASME BPVC Section III, Class 1, 2 & 3)
* 77% reduction in exposure time by utilising Swagelok Bristol's M200 Orbital Weld instead of manual welding

Many Swagelok components meet the nuclear industry codes and standards that your require including:

* 10CFR50 Appendix B/10CFR21
* ASME Section III - N, NPT, NA
* ASME B16.34, B31.1, QME-1
* ASME NQA-1, ANSI N45.2
* ASME BPVC Section III, Class 1, 2 & 3
* RCC-M (France)
* HAF604 (China)
* CSA N285 (Canada)
* CSA Z299
* ISO 9001:2015
* MSS-SP Documents for Valve Manufacturing & Testing

With Swagelok Bristol, you can be assured of protection against Counterfeit, Fraudulent and Suspect Items (CFSI) through our fully traceable supply chain and quality processes that ensure you receive exactly what you order, confirmed by product markings and documentation. Our proven quality, backed by our Limited Lifetime Warranty helps protect the integrity of your systems and applications.

Established in 1981, Swagelok Bristol has continuously developed product and service offerings designed to meet the specific needs of a diverse customer base across the South West of England and South Wales. With local expertise and a broad portfolio of products, assemblies and services we are confident of meeting all your nuclear fluid system needs.

Products and Services

Product Sector
Waste Management, Cleaning, Decommissioning Nuclear Civil
Instrumentation & Control Petrochemical & Refining
Pneumatic Components, Fittings Hoses and Accessories Aerospace - Civil and Defence
Process Engineering Systems Petrochemical & Refining
Tooling - General Engineering Power Generation, Distribution & Transmission
Valves & Actuators - Coded Standards Petrochemical & Refining
Welding Automated incl Systems Construction - Strategic Platforms & Vessels
Valves & Actuators - Standard Industrial Utilities
Tube & Pipework - Small Bore Subseas and Offshore
Pipe, Fittings, Reducers, Flanges Bending, Supports Marine Commercial & Naval
Mechanical & Electrical Engineering Nuclear Defence - Naval Marine
Fabrication Cutting Forming Pressing & Bending - Modules & Skid Mounted Systems Oil & Gas including LNG
Consumables - Engineering and Welding & NDE Automotive
Containment System Fabrications Aerospace - Civil and Defence

Swagelok Bristol provides all the components and services required to ensure fluid systems operate at optimum levels. Our team of Field Engineers is able to help you diagnose system issues and develop solutions that continuously improve your processes and applications. We offer a range of services including Training, Loss of Containment Evaluations, Asset Integrity Management, Engineering support and advice, and Sample System Evaluations. For a full list of our the services we offer, please go to our website

Site Facilities

Shop Floor

738m2 Swagelok Bristol has a range of facilities onsite including a Class 6 Clean Room, two installation training rooms, a training academy and a large shop floor. Our local fabrication and assemblies are backed by global manufacturing facilities, giving our customers the best of both worlds.

Welding & Cladding

Capability Swing Length Width
Orbital & Planetary (GTAW & SAW) Min: 6mm - -
Max: 200mm - -

Inspection / Testing

  • Clean room facilities
  • Non destructive testing - Ultrasonic
  • Pressure / Hydro Testing


  • CAD Design - 2D
  • CAD Design - 3D

Recent Work

Ultra - Reactor Carbonile Dosing Rig

Swagelok Bristol Custom Solutions fabricated a Carbonile Dosing Rig to support CO2 reactor secondary cooling system.

Ultra - Reactor Carbonile Dosing Rig

EDF Hinkley Point B - Turbine Hall Air Control Panels

Swagelok Bristol Custom Solutions fabricated control panels for critical air supply, control and isolation.

EDF Hinkley Point B - Turbine Hall Air Control Panels

EDF Hinkley Point B - Fuel Interspace Back Panels

Swagelok Bristol fabricated portable fuel route test panels enclosed within a protective back-pack with harness. These panels reduce operator exposure time via portable equipment utilised at source.

EDF Hinkley Point B - Fuel Interspace Back Panels