The DDT PIGGING SYSTEM, pioneered by DDT, is the most advanced system for decoking fired heaters. It is a fully proven and extremely effective process that removes even the hardest coke and scale from heater tubes.

The DDT Process removes this build-up from heater tubes in a serious of highly controlled incremental cleaning runs. Because the DDT Process is much more effective than steam-air decoking, chemical cleaning or any other mechanical cleaning method, you the customer, will attain all the economical benefits of an increased run length, longer tube life, lower fuel usage and proven heater reliability.

DDT's bi-directional Pigg® control method facilitates the cleaning of heaters which incorporate reducers and changing pipe diameters, without having to make any modification. It will permit closer attention to the most contaminated section of a heater, further optimizing the cleaning procedure.