Solar Tanks

Solar Tanks

Floor buffer reservoir of the heat conductive fluid
for the closed heating system
Type ST



Company VOGEL FLUG makes multi-power tanks(indirect water heaters) of series ST of large volume 400, 500, 800 or 1000 litres . They are completed with heat exchanger, in the lower third part - type ST ... C or in the lower and upper third part - type ST ... C2. The heat exchanger helps to warm hot water in the storage tank in indirect way.

Features of the tanks ST:
 – The tanks are made as floor standing tanks.
 – From the corrosion the tanks are protected with magnesium anode (anode rod on the upper cover prevents leaks in the storage tanks).
 – The tanks are provided with the hole for the system of hot water circulation, which provides hot water supply through the tap even if the accumulate tank is remote.
 – The inner surface is covered with glass enamel, so the tanks can be used for production and storage hot water for residential usage.
 – The tanks can be provided with the heater (3 kW; 6 kW, 3 х 1,2 kW, 3 х 1,6 kW), in order to get hot water without connecting to any external devices (solar collector, boiler, etc).

Storage tanks 400 - 500 litres ST are provided with the isolation.
For storage tanks 800-1000 litres type ST the 100 mm isolation from flexible polyurethane foam can be bought separately.
The dense of isolation ensures the least heatloss of the heated water in the boiler.

This series also can be made with dry heating element with the type designation STD ... C/2C. Its advantage is that when it is necessary to insert the heating element into the special tube on the cover there is no need to disassemble the cover and drain the water.

Storage tank is made of 3 mm low-carbon steel (production Austria).
Extremely high resistance of the reservoir and coils (heat exchanges) to the high pressure (0,6mPa).
Full guarantee - 3 years

Series ST Tank capacity,
overhead, m2
lower, m2
with an isolation, mm
with an isolation, mm
Weight, kg
ST 400 C 400 1,8 670 1832 145
ST 400 2C 400 1 1,8 670 1832 158
ST 500 C 500 2 750 1838 160
ST 500 2C 500 1 2 750 1838 172
ST 800 C without insulating material 800 2 1000 2000 268
ST 800 2C without insulating material 800 1,2 2 1000 2000 284
ST 1000 C without insulating material 1000 2,4 1000 2350 284
ST 1000 2C without insulating material 1000 1,2 2,4 1000 2350 320
Insulating material is for ST 800 liters 800 Removable heat-insulating substance: flexible polyurethane foam 100 mm
Insulating material is for ST 1000 liters 1000