Compressed air supply pressure regulator for vehicles - reduces switching noise with switching piston divided into equalising piston for outlet valve and switch off piston

摘要

The pressure regulator for compressed air supply systems, esp. for vehicles, has an outlet valve with closing spring whose valve body can be placed in the open position by a switching piston to allow compressed air delivered by a servo valve to pass into a switching space. It is designed for reduced noise disturbance during switching-off. The switching piston is divided into an equalizing piston (27) for the outlet valve (29, 30) and a switch-off piston (24) with effective surfaces (25, 26) of different area on the leading and trailing sides. The equalising piston is tensionally connected to the outlet valve body (28).