Description
The Allegro 9878‑40 Wall‑Air Filtration Panel with CO Monitor is a robust wall‑mounted breathing air purification system engineered to convert compressed shop or plant air into clean, Grade D breathable air suitable for supplied‑air respirators. Featuring a three‑stage filtration system, it effectively removes water, oil, hydrocarbons, and particulate contaminants from compressed air before delivery to your respirator outlet.
Designed to support up to 8+ workers (often used for up to 12 airline respirators in heavy industrial settings), this panel delivers up to 100 CFM of breathable air at 5–125 psig of operating pressure, making it ideal for applications such as painting, manufacturing, utilities, welding, and maintenance tasks.
The built‑in carbon monoxide (CO) monitor operates in AC or DC mode, continuously checking air quality and activating visual/audible alarms if CO levels exceed safe limits, helping you meet OSHA respiratory air requirements. A heavy‑duty powder‑coated steel mounting bracket, all‑brass plumbing with quick‑disconnect Hansen couplers, and a high‑pressure regulator with gauge and relief valve ensure durable performance and reliable air delivery.
Ideal for workshops and industrial environments where safe, filtered breathing air for multiple respirators is essential, this wall‑air filtration panel combines dependable performance with space‑saving wall installation.




