equipment class
Is a gas flow damper intended to adjust an air flow rate through a duct.
A closure intended for sealing off a duct in case of fire.
A gas flow damper that prevents back flow in a duct.
A gas flow damper that is used to relieve built-up pressure in a duct system to prevent damage to HVAC equipment.
A pressure vessel located in both pump- and compressor piping systems in order to reduce residual pulsation fluctuations, as a result of discontinue operation effects, within an allowable level specified.
A damper intended for closing off parts of a ventilation system.
A device decreasing noise in a HVAC system.
A device that damps, typically a valve or plate (as in the flue of a furnace) for regulating the draft, or a device to stop vibration, typically a shock absorber or snubber.