Home Storage Buffer Tanks
Buffer Storage · Hydraulic

Buffer Tanks

Hydraulic separation for optimal heat pump efficiency. Our buffer tanks in SUS316L stainless steel protect your heat pump from short-cycling, reduce compressor starts and significantly extend system lifespan.

Flow Wärme Buffer Tanks
40–500 LCapacity range
SUS316LStainless steel grade
Stronger welds
INCOLOYHeater material
15+ YearsManufacturing experience

Product Advantages

Hydraulic separation for maximum efficiency and longevity of your heat pump system.

Hydraulic Separation

The buffer tank hydraulically decouples the heat generator and consumer circuits. The heat pump operates at optimal working points, avoids short-cycling and minimises compressor starts.

German Quality Design

Designed in Germany — minimalist and timeless. Harmonises with modern plant rooms and is produced in individual colours and cladding on request.

Triple-Strength Welds

Double-sided formed welding technology — three times stronger than industry standard. SUS316L material guarantees corrosion resistance and decades of trouble-free operation.

INCOLOY Immersion Heater

High-grade INCOLOY immersion heater for optimal heat transfer and long service life — resistant to scale deposits and corrosion even in hard water conditions.

Optimal Thermal Insulation

Polyurethane high-pressure foam insulation minimises heat loss in the buffer tank. Energy-efficient operation even during extended standstill — tested with infrared inspection.

Wide Size Range

From 40 to 500 litres for all system sizes — from single-family homes to multi-family buildings and small commercial premises. Available in SUS304, SUS316, A0444, SUS2205 and SUS2304.

Technical Data

Capacity Range40 litres – 500 litres
FunctionHydraulic separation, heat storage
Primary MaterialSUS316L stainless steel (standard)
Additional Material OptionsSUS304, SUS316, A0444, SUS2205, SUS2304
Heating ElementINCOLOY (high-grade immersion heater)
Welding TechnologyDouble-sided formed welding — 3× stronger than industry standard
Thermal InsulationPolyurethane high-pressure foam, fully insulated
DesignGerman design — minimalist and timeless
Manufacturing ExperienceOver 15 years
Heat Pump CompatibilityAll Flow Wärme heat pumps and other brands
Solar ConnectionCompatible (optional solar heat exchanger)
CustomisationCustom sizes, materials, cladding available on request
Quality ControlAutomated production, pressure testing, infrared inspection

Interested in our Buffer Tanks?

Contact us for advice on the right buffer tank size for your heat pump system.