BELLOWS-TYPE AMPLIFIER MECHANISM

A part of the compressed air delivered through pipeline 1 passes through flow-control valve 2 to nozzle 3 and to the space between bellows 4 and housing 6. The remainder of the air passes through tube 5 to the internal chamber of the amplifier from where it is partly discharged to the atmosphere through tube 8 and partly to the servomotor through tube 7. Valve plate 9, linked to the bellows by a r…