One-way airflow vent expels condensation to keep mask interior dry
Twist seal locks inner filter in place and blocks unfiltered air for safety
Thicker plastic construction provides added durability
Easy replacement process for valves and diaphragms extends mask life
Summarized by Shop
A one-way airflow vent expels condensation keeping the dust mask interior dry.
Each valve facilitates easy breathing outwards by optimizing airflow.
An easy-twist seal locks the inner filter in place and blocks unfiltered air.
Our Replacement Exhalation Valves are made of thicker plastic, providing added durability.
1 set of valve and 4
Kit Contents
1 set valve and 4 diaphragms
Valve Material
Thicker plastic
Compatibility
BASE CAMP M Plus, M Cross, M Pro masks
Color
Black
Pattern
Solid
Summarized by Shop
4.7
13 ratings
5
4
3
2
1
Great mask my wife liked it so much she took mine so had to buy another! Having extra valves is a must!
P
Paul · August 27, 2026
I am becoming a consistent user as base camp has a better fit than others I have tried
A
Anonymous · 18 days ago
I purchased a mask a few weeks ago. The second time I used the mask the valve fell out. When i raised my concern to the customer service. The answers was “ they have a good news,i can order more valves so I can replace the lost ones”. Unfortunately I had to spend an other$30 to make sure I can use my “new” mask. Not ideal