US Standard replacement exhale valves for M40/MCU/M17 Series masks
US Standard replacement exhale valves for M40/MCU/M17 Series masks
A Standard Exhale valve used in most US issue gasmasks since the 50s Confirmed to work in:
All M40 series masks
All MCU/2 series masks
All M17 series masks
The ND Mark V (only the Mark V the rest of the ND series uses a flapper valve)
The US M9, M9A1, and all its foreign copy's.
All Exhale valves are brand new from military packs of 10 examined for flaws and Shipped.