One workhorse of the ETA mechanical line is the ETA 2824-2, The 2824 is an automatic winding, twenty-five jewel movement, available in four executions or grades: Standard, Elaborated (improved), Top and Chronometer.
The Breather Valve is a protection device mounted on a nozzle opening on the top of a fixed roof atmospheric storage tank. Its primary purpose is to protect the tank against rupturing or imploding.
Ventilators are a type of respiratory equipment that breathes for a person when he or she is unable to pull air into the lungs independently. In the most basic sense, a ventilator is a device that blows air into the lungs and creates positive air pressure within the alveoli.