Compact Duplex 2205 stainless steel buffer tank for heat pump and central heating systems, with top connections and a black frosted steel casing.
The RVS Buffertank BT-100 WM-B-C4 Black is a stainless steel buffer tank for heat pump systems, central heating installations and professional HVAC applications. It increases system volume, helps reduce cycling and supports more stable hydraulic operation.
The tank is manufactured from Duplex 2205 stainless steel and designed for long-term use in technical installations. The combination of stainless steel, PU insulation and practical connection options makes this model a durable buffer solution for installers.
With Energy Efficiency Class A, the high-quality PU insulation helps reduce heat loss, keeps stored heat at temperature for longer and supports lower energy consumption in heat pump and heating systems. This makes the Nexus stainless steel buffer range an efficient choice for reliable thermal storage, buffer volume and long-term energy savings.
By adding buffer volume, the heating system can operate more smoothly. This supports stable flow, less frequent start-stop operation of the heat source and reliable long-term system performance.
Technical data — Stainless steel buffer tank BT-100 WM-B-C4 Black
| General | |
| Product type | Stainless steel buffer tank |
| Rated volume | 100 L |
| Application | Heating/cooling buffer storage |
| Installation type | Wall-mounted / compact |
| Connection layout | Top connection layout |
| Number of exchangers | 0 |
| Height [mm] | 995 |
| Tilt dimension [mm] | 1100 |
| Outer diameter [mm] | 470 |
| Inner diameter [mm] | 370 |
| Insulation | CFC-free rigid PU foam |
| Insulation thickness [mm] | 50 |
| Outer casing | Frosted metal, Black |
| Weight [kg] | 25 |
| Warranty | 3 years |
| Tank | |
| Tank material | Stainless steel Duplex 2205 |
| Max. tank pressure [bar] | 10 |
| Max. tank temperature [°C] | 95 |
| Connections | ||||
| H | DN 2 | G 1½" | Hot water outlet | 995 |
| H | DN 3 | G 1½" | Hot water outlet | 995 |
| H | DN 4 | G 1½" | Cold water inlet | 995 |
| H | DN 5 | G 1½" | Cold water inlet | 995 |
| H | DN 14 | G 1/2" | P&T safety valve | 995 |
| H | DN 15 | G 1/2" | Sensor pocket | 995 |
| P | DN 1 | G 1/2" | Drain tap | 33 |
| Safety requirements |
| The storage vessel must be protected against overpressure at all times. We recommend installing the following safety accessories: • Safety valve and inlet combination • Nexus sanitary expansion vessel • Nexus expansion vessel for heating systems The required expansion vessel capacity must be calculated according to the total system volume and operating conditions. |