The 125P series 1/8 tubing push-button valve employs the classic Humphrey diaphragm poppet valve principle. Its unbalanced air spring return design ensures airtight sealing in both the resting and actuated states. The compact design allows for close-proximity installation to the working area and enables rapid cycling/quick exhaust. These robust 2-way or 3-way valves are available in normally closed or normally open configurations. They come with standard or optional brass bodies and are suitable for inline, base, or panel mounting.