Allegro Half Mask Constant Flow Airline Respirator 9920 PORTABLE GAS MONITORS AND DETECTORS measuring 8 inches x 5

measuring 8 inches x 5 inches

Purge fitting is used to detect gas levels in a pressurized gas stream from a pipeline or vessel being purged

and a Softspun lining that's comfortable against your face

so it won't absorb water

Default Alarm Setpoints: Low 50 ppm

Allegro Half Mask Constant Flow Airline Respirator 9920 PORTABLE GAS MONITORS AND DETECTORS measuring 8 inches x 5The 9920 half mask airline respirator from Allegro offers a comfortable silicone facepiece. Low pressure continuous airflow gives continuous protection from airborne chemicals. Intended to be used with air supply provided by an ambient air pump. Popular with spray foam installers and welding applications. Low profile design fits under many welding helmets. Durable silicone rubber is hypoallergenic, resistant to many chemicals, and remains soft even