Honeywell Replacement Exhalation Valve 770018 4 pack weight measuring device Perfect for everyday wear during

Perfect for everyday wear during warmer months

Does not require taping

This rotary pump is constructed of a durable

Replacement blade (Item # CF818BPP)

The ergonomic design is best used with a sweeping action

Honeywell Replacement Exhalation Valve 770018 4 pack weight measuring device Perfect for everyday wear duringRespirator inhalation and exhalation valves open and close opposite each other to maintain a constant, neutral pressure inside the mask. Inhalation valves open when a worker breathes in to allow air to flow freely into the mask through the filters. Exhalation valves close automatically when the inhalation valve opens. They open when workers breathe out to release breath and moisture from the mask, making masks to make them more comfortable by reducing