ARZEL SPD-R0012

Barometric Dampers

• Well suited for PSC motor applications
• Economical solution for the elimination
  of objectionable air noise
• Automatically bypasses excess air
  when increases in duct static pressure
  occur due to the closing of zone dampers
• Relief air control settings easily accomplished by simple adjustment of integral weighted control lever
• Weighted arm opens as static pressure increases
• Recommended for 2 - 3 zones where zones are nearly equal in size
• Made in the USA

Round Barometric Damper

• 20 Gauge galvanized
  steel blade
• 24 Gauge (6" - 10" diameter)
  or 20 gauge (12" - 16"
  diameter) galvanized
  steel shell
• 1/2" Plated steel shaft
• Oil-impregnated bronze bushings
• EPDM Rubber low leak seals
• (1) Shell end plain, (1) end crimped
• Rolled stiffening beads
• Dampers 14" and larger have spiral shells
• Shell length matches damper diameter