Tml SFI04000F Kettle lt. 4000 AISI 316L stainless steel with a fixed coil heat exchanger flex insulation

Vertical 3896-Litre AISI 316L stainless steel (1.4404) DHW Storage Tank – SFI04000F

The SFI04000F is a vertical domestic hot water (DHW) storage tank with a capacity of 3896 litres, manufactured in AISI 316L stainless steel (1.4404) by TML Industrie Loddo. Equipped with one fixed spiral coil heat exchanger providing a total heat exchange surface of 10.0 m², it delivers outstanding thermal performance for both residential and large commercial or industrial applications.

Technical Specifications – SFI04000F

• Tank material: AISI 316L stainless steel (1.4404) – Pickling and passivation inside and out.
• Max pressure / Max temperature (domestic side): 6 bar / 95°C
• Actual capacity: 3896 litres
• Heat exchanger: 10.0 m² – Fixed spiral coil – max 10 bar / 95°C
• Cathodic protection: Replaceable magnesium anode
• Insulation: Flexible polyester + PVC, thickness 100 mm (Fire class B2 DIN 4102)
• Dimensions: Ø 1400 mm × Height 2995 mm
• Weight: 590 kg
• Electric heater connection: 1½" fitting (heater not included)
• Warranty: 5 years

Why Choose the SFI04000F?

Large heat exchange surface ensures rapid heating of the stored volume and minimal heat losses thanks to the standard insulation. The vertical design optimises space utilisation and promotes thermal stratification, improving overall system efficiency. Pre-fitted for DHW recirculation, thermostat, temperature sensor, and electric backup heater.

Applications and Compatibility

Compatible with gas boilers, heat pumps, and solar thermal systems. The wide capacity range available across the SFI/DSFI line (150 to 5,000 litres) makes this tank the ideal solution for apartments, villas, hotels, sports facilities, and industrial plants requiring a reliable and continuous supply of domestic hot water.

Standards and Certifications

The SFI04000F complies with: PED Directive 2014/68/EU (Art. 4 Par. 3 – pressure equipment), Italian D.M. 6 April 2004 N.174 (material suitability for contact with drinking water), ErP Directive 2009/125/EC (energy-related products).