Sievert blowtorch spares: matching the right replacement burner

Sievert hand torches come in three families that cover most of what is on site and in the workshop: the Promatic series - the professional cartridge system - the Turbo-series power burners, and the Pro / Maxis hand torches. The families share the blowtorch logic but not the spares, so the series name is the first thing to read off your torch.

All three are covered in our fit tables, and every Sievert row in those tables is matched to your model rather than sold blind - the Sievert spares collection is the starting point, and the series name off your torch is the second.

The burner takes the abuse. Every ignition erodes the orifice a little, every dirty gas supply leaves carbon in it, and one day the flame goes ragged or split no matter how you set the valve. That is burner wear, and a burner is a replaceable part.

Before replacing anything, clean it. A yellow, sooting flame is carbon until proved otherwise, and a proper clean with a tip cleaner set is a two-minute job - how to clean a clogged torch nozzle walks through it. Replace the burner when the flame stays ragged after a real clean, because at that point the orifice itself is worn and no wire will bring it back.

Replacement burners are matched by what is stamped on the old one, not by what the torch looks like. Take the burner off a cold torch and read the size marking on it; then read the series name on the torch body. Those two pieces of information are the whole identification job in most cases.

No legible stamp, or a torch too old to carry one? A clear photo of the old burner next to a ruler does the same job - send it with the series name and we will match it.

Promatic-series torches take replacement burners matched to the burner size. Turbo-series power burners are matched the same way, by the stamp on the old burner. Pro and Maxis hand torches again follow the same logic - the series tells us the family, the stamp tells us the size.

What none of this needs is guesswork. The compatibility chart cross-references Sievert models against the replacement part, and any row marked for matching is confirmed against your specific torch before anything is posted.

A torch that will not light is not automatically a burner problem. Check the gas first - a cartridge or cylinder near empty, or a regulator not delivering. Then the ignition: a piezo that has stopped sparking is its own fault, separate from the burner. Then the connections: a gas smell at any joint means stop, and a soap-and-water test on the connection tells you where.

Only when gas, ignition and connections are all proved good does a no-light or bad-flame point back at the burner - usually a blocked orifice, which the cleaning step above answers, or a worn one, which is the replacement case. Working in that order is cheaper than working in any other.

Three things confirm a spare: the series name off the torch, the stamp off the old burner, and - if you can measure them - the thread and seat dimensions. Any one of them beats guessing; all three together are certain.

Send them via the contact page - a photo of the old part next to a ruler is the single most useful thing you can attach. Models not on the list get matched free; we would rather tell you it does not fit than post you a part that will not seal.

TorvPro parts are high-quality compatible replacements: independent, and not affiliated with Sievert. The Sievert name on this page is fitment reference only - and that is exactly why the price stays sensible.