An internal air bellow helps create the pneumatic pressure transfer needed in a compatible air-button system, and this Herga Electric version is a hard 1-5/16 inch diameter design using the 6470-ZZAB reference. Air bellows are useful because they help the button assembly communicate pressure to the remote switch mechanism without putting direct electrical contact at the button location.This part has practical value because the hard-bellow construction gives it a more specific response profile than a softer version, helping preserve the intended behavior of the original control design. A properly selected Herga replacement helps maintain reliable pneumatic actuation in compatible air-button applications.This type of part is especially useful when the original internal bellow is damaged, worn out, or no longer providing dependable pressure transfer. That helps restore button function without requiring full replacement of the larger control system.Installed in the proper application, this internal air bellow helps support dependable air-button operation and more confident service results. Hard internal air bellow from Herga Electric with 1-5/16 inch diameter Helps support pneumatic pressure transfer in compatible air-button systems Useful when replacing a worn or failed original bellow Supports dependable button response and control function Improves replacement accuracy and long-term serviceability
