03445 044 499 - We Are Open Mon-Fri 9am – 5.30pm

Toggle Nav
My Cart

RM Stelflow Unvented Direct Slimline Stainless Steel Hot Water Cylinder 645mm x 475mm 60L

In stock
  • Estimated Delivery
  • FREE

4 to 7 Working DaysOrders placed before 1pm are processed the same day, delivery times are between 8am & 6pm Monday to Friday, all deliveries require a signature, for delivery instructions please use the notes section during checkout. Please see below for Items you will also require for this product.

Was £1,506.73 Special Price £787.29 (inc VAT)

✝ Subject to stock availability. UK Mainland only. Delivery fees and times to Northern Ireland, Scottish Highlands & Isles, Isle of Man, Isle of Wight, Isles of Scilly, and the Channel Isles may vary. Deliveries are made during working days only.

More Information
SKU 994645
Manufacturer ID STS60DIR
Estimate Delivery Time 4 to 7 Working Days
Cylinder Capacity 60 Litres
Cylinder Diameter 475
Cylinder Type Unvented
Cylinder Height 645mm
  • 25 Year vessel guarantee.
  • Cylinder components guaranteed for 2 years.
  • Available in a range of styles sizes 90 to 600 litres.
  • A range of horizontal cased units.
  • Coil in coil high effeciency coil - high recovery rates.
  • External expansion for reliability and flexible siting.
  • Full Kiwa Approval.
Additional Features

  • Minimum recommended working pressure 1 bar.
  • Maximum working pressure 15 bar.
  • All cylinder connections are 22mm compression.
  • Units tested to 15 bar.
  • Minimum water supply 1.5 bar, 20 litres/min.
  • Primary coil circuit must be pumped.
  • Gravity coils available by special order.
  • Stainless steel stat pocket guaranteed against corrosion

Capacity (L): 60
Height (F)(mm): 645
Diameter (mm): 475
Cold Inlet (A)(mm): 173
Immersion 1 (B)(mm): 223
T&P Valve (E)(mm): 448


The RM Stelflow has carefully been brought together from quality components and has been designed with performance in mind.

Using our many years of involvement within the hot water industry and out knowledge of bringing unvented cylinders to the market we have created a new stanard in unvented water storage.

Made To Measure Stainless

RM Cylinders have pushed the boundries even further leaving the competition to catch up once again. Using a state of the art production facility RM Cylinders can produce bespoke Stelflow cylinders, tapping sizes and heights can now be changed to suit your application giving you flexability without compromise.

When altering inlet and outlet connections we can even provide corresponding control kits meaning you still end up with a complete packaged solution, leaving nothing to chance


Stelflow offers the following advantages

• Specially made units manufactured to your own design.
• Full range of slim units available, 60L to 210L, featuring a
diameter of only 475mm one of the slimmest on the market.
• A range of horizontal cased units.
• Coil in coil heat exchanger, giving high recovery rates.
• External expansion for reliability and flexible siting.
• Full KIWA product approval.
• Vessel constructed from Duplex Stainless Steel.
• Superior insulation values, with an ODP of 0 and GWP of 1.
• Comprehensive controls and fixing kit from leading


Stelflow offers many technical benefits

• Minimum recommended working pressure 1 bar & maximum
3 bar.
• All cylinder connections are 22mm compression.
• Minimum water supply 1.5 Bar, 20 Litres/Min.
• Primary coil circuit must be fully pumped, gravity coils are
available by special order
• All units available as vented cylinders.
• Control settings:
1. Pressure reducing valve set at 3 Bar.
2. Expansion relief valve set at 6 bar.
3. Temperature and pressure relief valve at 7 bar and 90oC.
4. High Limit stat set at 85oC


                                                                                                Technical Information







Fitting Instructions


25 year Guarantee

Here at TradePlumbing.co.uk we have voluntarily extended our returns period to 90 days, as we understand that sometimes there may be the odd item left over from a project or you may have an unexpected delay to a project meaning that you need the added peace of mind when ordering products in case a return is necessary.

We truly believe in being able to offer customers a flexible service and this extended period allows us to go that little extra to help you when in need, as long as goods are returned in the same condition as received we are happy to help.

To return any time initially please email your request to our Customer Support team at customerservice@tradeplumbing.co.uk along with your TP - Order Reference, please allow at least 1 working day for response and we will take it from there.

To View our complete Return Policy Click on Return and Refunds