<< Return to Previous Page Gas Fired Lead Pot Canopy Hood ![]() Text Version Gas Fired Lead Pot Canopy Hood Gas fired lead pot canopy hood with flue gas exhaust and no openings in the top 2/3 of hood. Provide covers for open areas. Minimize open areas. Use fireproof material to close opening around pipes (optional). Note: Dross pot hood is not shown. Design Criteria: Q = 150 cfm/ft2 open space + 100 cfm/ft2 of pot surface Vt ³ 4,200 - 4,500 for lead particulate Vface ³ 2,000 - 3,500 for lead fume only he = 0.25 VPduct (with covers off) |