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The static pressure regulating damper (SPRD) is a round or rectangular 1-blade barometric relief damper. It is a mechanical damper with no electrical connections. The blade has a counter-balance weighted arm that can be adjusted to open when necessary. It is recommended for use on zone damper systems up to 1/2 in static pressure and up to 2000 cfm.
Honeywell Pressure Relief Damper, Series: SPRD, 8 in Size, 400 cu-ft/min, Single Blade, Steel, Round, 0.5 in WC Pressure, 10 in L
| Blade Type | : | Single |
| CFM Rating | : | 400 cfm |
| Length | : | 10 in |
| Material | : | Steel |
| Pressure Rating | : | 0.5 in-WC |
| Series | : | SPRD |
| Shape | : | Round |
| Size | : | 8 in |
- Counter balanced weighted arm to control bypass air for zoned systems
- Air pressure in duct system increases as zone dampers close, pushing the SPRD open automatically
- Arm and weight both adjustable to control amount of air bypassed
- For larger systems and tighter pressure control, use MARD damper and static pressure controller (SPC)
Instruction/Installation Manual