MSA Safety Inhalation Values For Ultra Twin Face And Combo Mask Respirator, 1-5/16in, Black, Pack Of 20 Values

Breathe clean air with the help of these MSA Safety Inhalation Values. Inhalation and exhalation valves open and close opposite each other to maintain a constant, neutral pressure inside the mask. Valves are designed to 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. Designed to release breath and moisture from the mask to help reduce eyewear fogging. Includes 20 total.