Buffer tank KOSPEL SV-800.1 unenameled insulated, model SV-800.1, 800 L capacity

Buffer tank KOSPEL SV-800.1 unenameled insulated is a hydraulic separation and thermal storage vessel with a gross capacity of 800 litres. Constructed from uncoated steel on the inside, the tank is fitted with external thermal insulation to reduce standby heat losses. The SV-800.1 is intended to stabilize system temperatures, increase thermal inertia and smooth boiler, heat pump or solar thermal system operation by providing additional water volume between heat sources and the distribution circuit.

Advantages

The buffer tank combines a large storage volume with compact external insulation for lower heat loss and straightforward integration into existing heating installations. Its unenameled steel interior provides robust thermal conduction and is suitable for standard heating water. The design reduces frequent cycling of heat sources, supports more consistent flow temperatures and can improve overall system efficiency by allowing longer pump and burner cycles.

Suitable for

• Hydraulic separation between heat generators and distribution circuits
• Integration with boilers, solid fuel units, gas or oil burners
• Heat pump systems requiring additional thermal inertia
• Solar thermal installations that need buffer storage for intermittent collection
• Systems where reduced cycling and stabilized supply temperatures are desired

Key specifications

• Nominal capacity: 800 litres
• Construction: unenameled steel interior
• External insulation: factory-fitted thermal insulation for reduced heat loss
• Application: thermal storage and hydraulic separation in closed heating systems
• Suitable medium: heating water compatible with uncoated steel

How to use

Install the buffer tank in a location with sufficient access for piping and maintenance. Connect the tank between the heat source and the distribution circuit following hydraulic diagrams appropriate for your system: place charging lines from the boiler, heat pump or solar circuit to the tank and discharge lines from the tank to the heating loop. Ensure correct placement of fittings, safety valves, temperature sensors and air vents as required by local installation standards. Commission the tank with a controlled fill and pressure test before regular operation, and set system controls to take advantage of the buffer volume for longer cycling intervals.

Usage recommendations

Use corrosion inhibitors or water treatment if local water quality requires it, and follow manufacturer or installer guidance on recommended operating temperatures and maximum working pressure. Periodically inspect insulation, connections and fittings for integrity and service as part of routine heating system maintenance.