Patent ID: 8967180
Filing Date: 2015-03-03
Classification: F16K,G05D,Y10T

Abstract:
1. A pilot type pressure regulator for regulating a pressure of compressed air in accordance with a pilot pressure, the pressure regulator comprising: a port block provided with: a primary port to which compressed air is supplied; and a secondary port communicating with the primary port via a main valve hole, wherein regulated compressed air is discharged from the secondary port, and a main valve shaft provided with a main valve body for opening and closing the main valve hole is mounted in the main valve hole and movable in an axial direction; and a main valve diaphragm which is disposed between a mounting end surface of the port block and a pressure regulating adaptor mounted to the mounting end surface, which partitions and forms a secondary pressure chamber communicating with the secondary port and a pilot pressure chamber on the side opposite to the secondary pressure chamber, and which contacts an abutting end surface of the main valve shaft wherein the port block is provided with an exhaust flow path in which air is discharged from the secondary port when the pressure of the secondary port exceeds a set value, wherein an opening portion of the exhaust flow path is provided so as to open on an outer surface of the port block, wherein the main valve shaft is provided with: an axial exhaust hole formed so as to open on the abutting end surface; and a radial exhaust hole causing the exhaust flow path and the axial exhaust hole to communicate with each other.