RM Cylinders - Stelflow

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

Using RM's many years of involvement within the hot water industry and their knowledge of bringing unvented cylinders to the market they have created a new standard in unvented water storage.

Stelflow offers the following advantages:

Specially made units manufactured to their own design.
Full range of slim units available, 60L to 210L, the units feature 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 manufacturers.

Stelflow offers peace of mind with the following guarantees:

25 Year vessel guarantee.
Stainless Steel stat pocket guaranteed against corrosion.
All other cylinder components guaranteed for 2 years.
All units are pickled to ensure longer life.
Stelflow offers many technical benefits:
Minimum recommended working pressure 1 bar & maximum 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 fully pumped, gravity coils are available by special order.
All units available as vented cylinders.

Control settings:

Pressure reducing valve set at 3 Bar.
Expansion relief valve set at 6 bar.
Temperature and pressure relief valve at 7 bar and 90^oC.
High Limit stat set at 85^oC

Stelflow Performance

		Weight Empty (KG)	Weight Full (KG)	Full Cold Capacity (L)	Reheat Indirect Total Minute	Reheat Indirect Total Minute	EN12897 Heat Exchange k	Dedicated Solar Volume Litre	Standing Loss Cylinder kWh/da
Stelflow 90	Indirect	23	111	88	12	53	16.46	-	1.07
Stelflow 120	Indirect	30	148	118	16	80	16.46	-	1.23
Stelflow 150	Indirect	38	186	148	17.2	106	18.55	-	1.41
Stelflow 180	Indirect	42	220	178	20.4	136	18.55	-	1.53
Stelflow 210	Indirect	45	253	208	22	150	18.55	116	1.8
Stelflow 250	Indirect	51	299	248	25	213	22	-	2.15
Stelflow 300	Indirect	60	357	297	34	285	22	-	2.28

Stelflow Indirect