Thank you for finding Flanged Immersion Heaters UK.
We are very proud suppliers of UK manufactured Flanged Immersion Heaters, and we will guarantee your high quality heaters delivery within 2-3 weeks from payment received.
And we will also promise the highest level of customer service possible, recently described as “Rare Breed” by a happy customer. We are renowned for high quality advice, support and service that are all a cut above. See Testimonials garnered supporting this assertion, which are scrolling at the left of this page. And yes, they are all real! Please feel free to add to them by clicking these links for Google, TrustPilot. & FaceAche.

As part of the Immersion Heaters UK Ltd Group, we specialise in supplying exclusively to industry.
Our other websites include Immersion Heaters UK Ltd, Brewery Heaters UK, and Heating Elements UK. We also provide free to all users ElementsOfHeating, a Blog full of relevant information & heating Calculation tools.
The vast majority of our customers are small-to-medium-sized business’.
If you’d like to put a face to the voice on the fone, then click here.
If you’d like to know a little bit more detail as to what an immersion heater actually is, click HERE.
IMPORTANT
###Please note – Certificates of Conformity and other such documentation are chargeable and need to be specified at the outset ###
Common Flanged Heater Sizes & Specs.
Our FFY Range are equivalent to Heatrod – HRF & EXHEAT – HFY & Santon – DY
168mm Ø X 12mm AISI316 FLANGE 8 x 10mm HOLES 146mm PCD
| Model | Loading kW 415v 3Ph | Elements | Immersed Length” | Immersed Length mm | Loading kW 380v 3Ph | Loading kW 440v 3Ph |
| FFY1216 | 12 | 6 | 16 | 405 | 10.1 | 13.5 |
| FFY1223 | 12 | 6 or 9 | 23 | 584 | 10.1 | 13.5 |
| FFY1816 | 18 | 6 or 9 | 16 | 405 | 15.1 | 20.2 |
| FFY1823 | 18 | 6 or 9 | 23 | 584 | 15.1 | 20.2 |
| FFY2416 | 24 | 6 or 9 | 16 | 405 | 20.1 | 27 |
| FFY2423 | 24 | 9 | 23 | 584 | 20.1 | 27 |
| FFY2716 | 27 | 9 | 16 | 405 | 22.6 | 30.4 |
| FFY3027 | 30 | 9 | 27 | 685 | 25.2 | 33.7 |
| FFY3627 | 36 | 9 | 27 | 685 | 30.2 | 40.5 |
| FFY4527 | 45 | 9 | 27 | 685 | 37.7 | 50.6 |
| FFY5436 | 54 | 12 | 36 | 915 | 45.3 | 60.7 |
- Bespoke to suit your specific requirements.
- 1kw to 2000kw power rating.
- 240 or 415 volts with other voltages available for equipment destined for other countries.
- Various flange size and material to suit application,
- ‘Stood off‘ terminal enclosures available for high temperature applications.
- Available with thermostats and/or safety cut-outs,
- Incoloy 800 or stainless steel sheathed elements,
- Available with a range of IP rated terminal enclosure to suit.
- Flameproof and explosion-Proof ATEX certified Exd constructions available on request.
Needing a Flanged Heater doesn’t have to be a stress. Let us show you a better, British way.
Typical Flange Dimensions.
As with pipes (hence the British Standard Pipe Legacy), it was necessary to standardise the dimensions of the various flange types depending upon requirements. Standardisation also facilitates easier communication between relevant parties (designer, manufacturer etc.), with a reduced likelihood of error. 
A piping designer in Canada may wish to instruct on site fitters in Kuwait to use a certain flange with specific dimensions. This process would be tedious considering the criteria that must be specified (internal diameter, outside diameter, thickness, hole diameter etc.). To circumvent this problem, the designer indicates the type of flange, its size, pressure class, schedule, and the standard to which it is to conform.
To ensure the flange specification is tied down 100% tight, the following information will be invaluable to us. If you can access the flange rim to take a foto of the following, fantastico, please send it with your enquiry!

This stamping usually indicates –
A. Manufacturer’s identification
a. could be a name, logo, or code that identifies the company that manufactured the flange
B. Standard a. (EN 1092-1) This indicates the European standard that the flange conforms to
C. Flange Type
a. 01 FLAT
b. 02 LAPPED
c. 04 LAPPED
d. 05 BLIND (MOST COMMONLY USED FOR IMMERSION HEATERS)
e. 11 WELD NECK
f. 12 THREADED
D. DN size
a. This refers to the nominal diameter of the flange in mm (although this can be obscure or unrelated to the actual size) (e.g., DN 150). See additional information
E. PN rating a. (PN 16) indicates the flange is designed for a nominal pressure of 16 bar
F. Material
a. The material the flange is made from is also indicated i. S235JR for carbon steel ii. SS316/L for AISI316L
G. Melt indication or cast number: a. This provides traceability back to the specific batch of material used in the manufacturing process.
If this is not present, we will not be defeated, and some or all of the following will help us to get things right first time (“Measure twice, cut once” a wise man once told me!).

If the worst comes to the worst –
- Measure the flange Outer Diameter.
- Count the bolt holes.
- Measure the distance (centre to centre) of two of those bolt holes.
- Take a foto of (Hopefully!) a Manufacturers Label on the terminal box.
- Take fotos of the flange, from whatever jaunty angles are accessible.
- Measure the diameter of the tank & figure out if there are any potential obstructions, heating coils, etc.
- Decide if you want thermostats to control / cutout, at what temperatures.
- Put it all into an email to immhtr@gmai.com and we will pull out the Office Deer Stalker Hat, and figure it out!
Immersion Heaters UK – Useful Stuff.

This website not only presents an online catalogue featuring our core product range but also provides valuable tips, advice, and guidance. Additionally, you’ll discover links to other resources designed to enhance your life, including our heating calculators.
ElementsOfHeating, our blog, is a rich source of pertinent and valuable information. You can explore topics like an in-depth explanation of what constitutes a heating element. Furthermore, we provide a comprehensive description and elucidation of the constituent parts of a screwed immersion heater. I’ve also taken a shot at demystifying the concept of watt density, highlighting its crucial significance when selecting the most suitable immersion heater for water, oil, and brewery applications. Additionally, you’ll find an informative post detailing the process we typically follow in the design of immersion heaters.
YouTube Channel.
On our YouTube channel we have videos showing how to wire an immersion heater…
…an explanation of what a heating element is…
..as well as this 2 minute explanation of what an immersion heater is.
We hope you find the site intuitive & easy to use, and if you have any suggestions, feedback or corrections, please contact Jamie at ImmHtr@gmail.com or on 01827 215684. Always wanting to learn & Collaborate!







