Sievert 3940 Standard Burner 17mm – 394002 | 1.2kW | Brush-Type Flame | Pro 86/88
A 17mm standard burner with a brush-type flame for soft soldering, jewellery annealing and small heating applications on the Pro 86/88 system. Soft soldering to 12mm pipe diameter, silver soldering to 615°C. 1.2kW, 90g/h at 2 bar. M20 × 1 threaded connection. Fits Pro 86/88 neck tubes.
The 3940 is a standard burner — not a pin-point — despite having the same 17mm diameter as the 3938 and 3939. Where the pin-point burners concentrate heat into a very fine, precise flame, the 3940 produces a brush-type flame for even, all-round heat distribution. This makes it the correct choice for annealing gold and silver — where the brush flame distributes heat gently over the whole piece — and for small heating applications where a pin-point flame would be too concentrated.
At 1.2kW it has more output than both pin-point burners (3938 at 0.25kW and 3939 at 0.9kW) for the same 17mm head diameter. Cooksongold recommends the 3511 (70mm) neck tube for bench-level jewellery work with the 3940. Silver soldering capability extends to approximately 615°C.
Key Features & Benefits
Brush-Type Standard Flame — Even, all-round heat distribution — correct for annealing precious metals and small heating applications where pin-point concentration is unwanted.
Soft Soldering to 12mm Pipe — Suitable for pipe nipples and small fittings.
Silver Soldering to ~615°C — Suitable for gold and silver jewellery and silversmithing applications.
Annealing Gold & Silver — The brush flame is specifically well suited for annealing precious metals and melting small quantities of gold and silver.
1.2kW/90g/h — More output than the pin-point burners at the same compact 17mm head size.
M20 × 1 Threaded Connection — Fits standard Pro 86/88 neck tubes directly.
Brass Construction — Durable for sustained professional workshop use.
Ideal For
Annealing gold, silver & precious metals
Jewellery making & small-scale metalwork
Soft soldering small components & pipe to 12mm
Silver soldering jewellery at ~615°C
Pro 86 (3486) & Pro 88 (3488) handle owners wanting a standard brush flame at 17mm
Brush-type flame for annealing, jewellery and small soft soldering on the Pro 86/88 system. Order the Sievert 3940 Standard Burner today for fast delivery.
Specification
Sievert 3940 Standard Gas Blow Torch Burner Specification
Brand
Sievert
Article Number
394002
Flame Type
Standard – brush-type (not pin-point)
Burner Diameter
17mm
Heat Output
1.2 kW at 2 bar
Working Pressure
2 bar
Gas Consumption
90 g/h at 2 bar
Soft Soldering Capability
Up to 400°C – max pipe diameter 12mm
Silver Soldering Capability
~615°C
Burner Connection
M20 × 1 – standard Pro 86/88 neck tube thread
Material
Brass
Compatible Handles
Sievert Pro 86 (3486) & Pro 88 (3488)
Recommended Neck Tube
3511 (70mm) for bench-level work
Suitable Applications
Annealing, jewellery soldering, soft soldering to 12mm, small heating
Features
Sievert 3940 Standard Gas Blow Torch Burner Features
Brush-Type Standard Flame — Even, all-round heat distribution — correct for annealing precious metals and small heating applications where pin-point concentration is unwanted.
Soft Soldering to 12mm Pipe — Suitable for pipe nipples and small fittings.
Silver Soldering to ~615°C — Suitable for gold and silver jewellery and silversmithing applications.
Annealing Gold & Silver — The brush flame is specifically well suited for annealing precious metals and melting small quantities of gold and silver.
1.2kW / 90g/h — More output than the pin-point burners at the same compact 17mm head size.
M20 × 1 Threaded Connection — Fits standard Pro 86/88 neck tubes directly
Brass Construction — Durable for sustained professional workshop use.
Questions
Reviews
Sievert 3940 Standard Gas Blow Torch Burner Reviews
