Lead Pot and Dross Hood

Text Version

Lead Pot and Dross Hood

Lead pot with dross pot and hood. Keep work openings as small as practical. Doors advisable. Door for dross pan removable.

Design Criteria:

Q = 100 - 200 cfm/ft² of opening plus volume of products of combustion.*
Duct velocity = 2,000 - 3,500 fpm for fume only.
Duct velocity = 4,200 - 4,500 fpm for transport of dust and fume.**
Entry loss = 0.50 VP
* Correct for temperature
** For horizontal runs, transport velocity is necessary.

Note: Separate flue required if combustion gases are not vented through the hoods.