Performers

Technical information: flames

Although the flame temperature of an LPG (propane or butane) air burner at the hottest point is approximately 1900^oC, the actual temperature a heated component can attain is much lower than this and depends on the burner, and the thermal properties of the component and its surroundings.

Acetylene-air and MAP//Pro gas-air will give flame temperatures 200-300^oC above this and component temperatures 200-300^oC higher too.

The Autotorch brazing burners can give temperatures up to 950^oC under general conditions and up to 1200^oC in ideal conditions only. They can therefore bronze braze under most conditions as well as being able to make faster soft and silver soldered joints. They are particularly good for hard/silver soldering of copper pipes.

The Autotorch 2300 series burners, the Autotorch System 2 burners and the Standard torch burners can give temperatures up to 800^oC under general conditions. They are, therefore, ideal for soft and silver soldering and lead welding, but cannot be used for bronze brazing.

The Autotorch acetylene burners can give temperatures up to 1100^oC undergeneral conditions and 1350^oC under ideal conditions and can be used to do bronze brazing as well as the other general uses of torches discussed above.

MAP//Pro gas used on the FirePower, AutoPerformer and Performer torches will generally achieve temperatures between the Autotorch brazing burners and the Autotorch acetylene burners.

General uses of torches

Some of the uses of a Bullfinch torch are:

• Soft and silver soldering
• Central heating installation - capillary joints
• General plumbing work
• Factory maintenance work
• Public utility work
• Telecom work
• Electrical work
• Gas installation
• Tube bending
• Paint stripping
• Modelling
• Jewellery work
• DIY work
• Electrical work with soldering attachment
• Plastic tile laying
• Heat shrinking of sleeves and plastics - e.g. cable jointing for Telecom and electrical installations
• General household jobs
• Removal of fungal growth from beehives
• Other agricultural uses such as removal of feathers from bird carcasses
• Pottery kilns - see below
• Blacksmiths forges

And for larger burners in Standard blowtorch range:

• Bitumastic work
• Roof laying
• Torch-on roofing
• Weed burning
• Large pipe work - e.g. weld pre-heating

Uses of Autotorch brazing system

In addition to the uses shown which these brazing burners will usually do faster, the brazing system is ideal for silver soldering of copper pipes and as a portable bronze brazing system for the following areas of work:

• Maintenance
• Jewellery
• Refrigeration
• Steam fittings installation
• Model engineering
• Heating and ventilating
• Agricultural machinery maintenance
• General engineering repair
• Appliance repair
• Lighting barbecues
• Lighting braziers, coal and coke fires
• Technoweld aluminium brazing

The Autotorch acetylene system

Has improved performance over the Autotorch brazing system and is particularly good for Bronze brazing and Technoweld work.

Kilns

Bullfinch standard burners can be used for providing the burners for kilns. Most kilns have different requirements and so it is hard to give specific advice. We do have an informal information sheet on how our burners may be set up for a kiln - see downloads section. It is important to remember that the burners do require space round them to allow air to be drawn in for combustion at the front and the back of the burners.