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RM Cylinders

Indirect Stainless Steel Cylinder 815 x 450mm

Product Code: 71148

Part L compliant. Vented, with high efficiency foam insulation and 22mm compression connections and fittings. Suitable for use as a Grade 2 copper cylinder.

  • Stainless Steel
  • 10 Year Manufacturer's Guarantee
  • Welded Joints Reduce Risk of Leaks
  • Standard BS Tapping Heights (Copper Equivalent)
  • View more information

Equivalent to copper cylinder size H x Dia: 900 x 450mm. Actual cylinder size H x Dia: 815 x 450mm. Add 70mm to diameter to include foam insulation. Recommended to work from 15m head, can work up to 25m. Complies with Part L of the Building Regulations.



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Rated 5 out of 5 by Great cylinder Good product with prompt next day delivery, Easy to fit with small adjustments to the pipe work. Too early to comment on reliability, but it has a 10 year warranty. Good value for money. 7 Jan 2015
Rated 4 out of 5 by Things to know I replaced my old copper tank with this unit and thought i would share my experiences. 1/Always wash out the tank as there WILL be bits of foam inside. Mine had lots and you don't want these in your pipes! 2/This tank has 2 side and 1 top hot water connections (total 3, plus the heater exchange coil connections) so if you might need a blanking connection. The description on here and the manufactures site doesn't show you this. 3/ You will need a Incoloy Immersion Heater. 4/ The connection positions WILL be in a different position to your old tank, so don't expect a quick swap out. The British Standards are meant to make easy but it wasn't and all pipes needed adjustment. Cant comment on reliability...yet. we will see in 10 years time :-) Hopefully that will help you! 18 Jan 2014
Rated 4 out of 5 by Good tank but take care! This is a good tank, well made and initial impressions are that it's very efficient. However I had a couple of issues with it. Firstly when I looked inside the tank before fitting there were lots of large bits of insulation in the bottom - this was a real pain to get out, but if I hadn't have checked it would have been even worse as this stuff would have floated and blocked the hot water system - imagine how many extra hours that might have taken to fix! Secondly the immersion flange is weird with hardly any flat sealing surface and almost certainly would not seal with the usual washer, so you need to resort to lots of ptfe! Having the 22mm compression fittings is a real benefit - excellent in a restricted space 19 Dec 2013
Rated 4 out of 5 by Easy to install Fitting was easy with the connections all at the same heights/positions as the copper cylinder it replaced. The 22mm compression fittings extend further than the tap connectors on the old cylinder - this might be an issue if space is really tight. However it does mean that the compression nuts stand proud of the insulation so doing them up is easy, and you can cut off the old tap connectors and slide the pipes straight into the fittings without extending the pipes. The immersion heater flange is big enough for the sealing washer. The cylinder is well packaged. In operation the water heats effectively. Overall: a quality product I would recommend. 20 Sep 2013
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1 Question  1 Answer

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Am confused - will the indirect SS replacement 71148 fit without alteration to present pipework?
16 Jan 2016
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, Builder/Multi Trade
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Thank you for contacting us. The 815 x 450mm Stainless Steel cylinder has been designed to be as close to its copper counterparts as possible, however because so many designs of copper cylinders exist it is impossible to say that alteration wont be necessary, however in many cases alteration is kept to a minimum.
26 Jan 2016
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Brand RM Cylinders
Colour Blue
Connection Type 22mm Compression Fittings
Construction Material (Plumbing) Stainless Steel
Grade Grade 2
Manufacturer Guarantee 10 years
Model Name Aquastel
Model No Aquastel
Pack Size 1
Product Diameter 450 mm
Product Height 815 mm
Product Type Cylinder
Total Product Weight 12.9 kg