A PN Rated Flanged Immersion Heater (or Pressure Nominale) is rated for pressure at that number of BAR. So PN16 is good to 16 BAR. This will vary the depth of the flange, the number, position & size of the bolts, etc. Simply put, only elements having the same DN and the same PN can be coupled. Which is why it’s best we go “Old School” and have a chat, call Jamie on 01827 215684. The possible need for Blind Female Flange Fittings (that’s easy for you to say!), gaskets, bolt kits with nuts & washers, & stand off tube can also form part of that conversation.
“Measure Twice, Cut Once”, as David said, after he received this 120kW 415V 1200mm Immersed DN250 10″NB PN16 Beast, in November of ’23.
PN6 – PN10 – PN16 – PN25 – PN40 – PN64
PN Rated Flanged Immersion Heater Images.
We can do any & all sizes (DN 1″ NB (DN25) up to 12″ NB (DN300)), coupled with any & all PN (Pressure Nominale) rating.
This table explains the DN Imperial to Metric matchings, as well as the Pitch Circumference Diameter of the ring of bolts.
This table details the exact dimensions of the various DN specifications, for PN16, as an example.
Useful Immersion Heater Background Information – For the Inquisitive
An Immersion Heater…
…is usually 3 Heating Elements, usually Incoloy 800 sheathed (“A Superior Stainless Steel“)…
…sometimes U bent as in Element image, sometimes looped, as in Immersion Heater image, to fit more element into available space, thus lowering the watt density & extending it’s working life. Usually on a screwplug, usually Brass 2.25″BSP. Usually with a terminal box, hopefully IP 67 . Commonly to screw into a vessel, usually Stainless Steel, generally through the side, via a weld boss, welded to the tank.
If you now realise what you are actually after is a Heating Element, please click HERE to visit, view and buy from our sister site, HeatingElements.co.uk. Or you can stay on IHUK and view our element selection HERE.
If you are interested in an Immersion Heater, please select from –
- Industrial Immersion Heaters – Stock Brass 2.25″BSP 3, 6, 9, 12, 18 & 24kW and Bespoke available.
- Brewery Immersion Heaters – Stock Brass 2.25″BSP 3, 6, 9, 12, & 18 available.
- Oil Immersion Heaters – Stock Brass 2.25″BSP 0.3kW, 0.6kW, 1kw, 2kW, 3kW, 4kW and 6kW.
- Over the Side or Vat Heaters – Most commonly Stainless steel
- Single phase 240v
- 3 phase 415v
- But also available in Mild Steel, Titanium & PTFE sheathed.
Immersion Heaters UK – Useful Stuff.
On this site, you will not only find an online catalogue of our core range of products. You’ll find tips, advice and guidance, as well as links to other resources to make your life easier, including our heating calculators.
On our blog, ElementsOfHeating there is a wealth of relevant and useful information, such as an explanation of what a heating element actually is. Also we have a full description and explanation of the component parts of a screwed immersion heater and my best punt at explaining the joys of watt density, and it’s crucial importance when choosing the most appropriate immersion heater for water, oil, and breweries. Also available is an informational entry about the process we go through when designing immersion heaters generally.
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.