Boiler blast machines are used for preparing the insides of water heaters for subsequent enamelling (wet or powder enamelling).

Boiler before blasting
Boiler after blasting

Depending on the handling system we offer semi-automatic and fully-automatic systems:

Semi-automatic blasting systems

Without a transportation system water heaters are loaded/unloaded manually. According to the desired throughput 1, 2 or 3 boilers are processed at the same time.

Boiler blast facility with 1x3 stations

The shown machine features 3 combined blasting and cleaning stations:

Semi-automatic bloiler blast machine with 1x3 stations

Fully-automatic blasting equipment

In most cases this equipment is used in combination with a P+F conveyor system, occasionally also with a circular conveyor. According to specifications either 1, 2 or 4 boilers are processed simultaneously.

Boiler blast facility with 2x4 stations

The shown machine features 4 ea. blasting and cleaning (= air purging & rapping) stations and is loaded by a Power+Free conveyor:

Fully-automatic blast machine with 2x4 stations
Blast cabinet with blast generator, blast media reclaimer and dust collector

Processing of boilers

With fully-automatic boiler blast facilities each water heater first passes a blastcleaning station and then proceeds to an airpurging/rapping station (with semi-automatic machines both processes take place in a combined station).


Positioning of boilers is done pairwise by means of suspension frames:

Suspension frames ensure precise positioning of boilers

Blasting & cleaning

After positioning blast nozzles and air purging nozzles resp. move from below into the boilers. In the cleaning station boilers are additionally rapped pneumatically:

Blasting station
Cleaning station

Boiler or lance rotation?

By default boilers are rotated during the blasting process. Optionally the lances can be rotated, e.g. if boiler rotation is not possible due to lateral extensions of the water heaters. Lance rotation alsois needed with so-called twin boilers.

Boiler rotation
Lance Rotation

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