Home / Sievert & Bullfinch Equipment / Burner Heads Product Description Burner diameter: 25mm Soldering till: 70mm Brazing till: 32 Gas consumption in g/h at 2 bar: 800 Effect: 10.3kW Material: Stainless steel/brass Delivery & Returns Sievert 352503 Cyclone burner 25mm £58.50 £48.75 (ex. VAT)