Overview
Hot water tank and heating buffer in one, for heat pump, solar and gas boiler systems. The Double Cylinder Water Tank is part of Pecol's Storage Water Heaters range (stainless steel tanks for heat pump & solar systems). Size range: 200 – 500 L.
All details on this page come from the Pecol stainless steel tank catalogue 2026. Download the Stainless steel tank catalogue 2026 (PDF) for drawings and installation notes.
Key features
Two tanks in one
Combines a sanitary hot water tank and a heating buffer, saving installation space, transport and labour.
Works with many heat sources
Heat pump, solar panels and gas boiler, feeding underfloor heating, radiators and fan coils.
High efficiency
SST water heaters can reach EU energy efficiency level A+.
Duplex 2205 option
Duplex 2205 has far better pitting-corrosion resistance and strength than SUS304 or SUS316L, so tanks last longer.
Technical specifications
| Item | 200 L | 250 L | 300 L | 400 L | 500 L |
|---|---|---|---|---|---|
| Buffer capacity | 50 L | 50 L | 100 L | 100 L | 200 L |
| DHW capacity | 150 L | 200 L | 200 L | 300 L | 300 L |
| Inner diameter (mm) | Ø470 | Ø470 | Ø500 | Ø550 | Ø600 |
| Outer diameter (mm) | Ø560 | Ø560 | Ø600 | Ø650 | Ø700 |
| Insulation thickness (mm) | 45 | 45 | 50 | 50 | 50 |
| Height (mm) | 1500 | 1780 | 1850 | 1900 | 2000 |
| Inner tank material | Stainless steel 304, 316L or Duplex 2205 | ||||
| Electric heater | 1.5 kW & 3 kW, 220–240 V 50 Hz 1-phase | ||||
| Working pressure | 0.6 MPa | ||||
| Testing pressure | 1.0 MPa | ||||
| Casing | Painted galvanised steel / SUS304 / PU soft jacket | ||||
| Exchange coil | SUS316L, 22 / 28 / 32 / 35 mm | ||||
| Connections | 1/2", 3/4", 1", 5/4", 6/4", 2" | ||||
Specifications are from the manufacturer's brochure and may change without notice. Please confirm with our engineers before ordering.
Where it is used
- Homes with heat pump hot water and heating
- Solar plus heat pump systems
- Projects short of plant-room space
Double Cylinder Water Tank price and quotation
Prices depend on the size, installation and site conditions, so we quote each project individually. Tell us how many people or rooms you need hot water for, and our engineers will recommend the right model and send you a free quotation.
