Bypass dampers open and close to help relieve overpressure conditions in an HVAC system. They are commonly used with zoned forced-air systems and open when pressures reach a certain level, venting excess air to a dump zone or sending it back to the return duct. These dampers can be set manually to activate at a specific pressure.
Round Bypass Dampers
Round bypass dampers install into HVAC ducts and relieve overpressure conditions by opening and allowing excess pressure to vent to the return duct or a dump zone.
Steel Frame with Galvanized Steel Blade
Round Bypass Dampers Steel Frame with Galvanized Steel Blade, sorted by For Nominal Duct Diameter, ascending
Replacement Damper Regulators
Replacement damper regulators allow balancing dampers to operate correctly by replacing worn or damaged regulators.
Replacement Damper Regulators, sorted by Compatible with Grainger Part Number, ascending
Note: Product availability is real-time basis and adjusted continuously. The product will be reserved for you when you complete your order.