Patent ID: 8327877
Filing Date: 2012-12-11
Classification: F15B,G05D,Y10T

Abstract:
1. A pressure reducing apparatus comprising: a body having a first tubular member provided with a port through which a pressure fluid may be supplied; a diaphragm having a valve member disposed displaceably in an interior of the body and which is seatable on the port of the body, a guide member formed unitarily with the diaphragm and having a portion in slidable contact with an outer circumference of the first tubular member, and able to be slidably displaced relative to the first tubular member and guided along an axial direction thereof by the movement of the diaphragm, wherein the outer periphery of the guide member is conically tapered to have a smaller diameter in a direction toward the portion in sliding contact with the outer circumference of the first tubular member, and a skirt formed unitarily with the diaphragm that extends from an edge of the valve member and which is retained by the body; a spring interposed between the body and the diaphragm, which urges the diaphragm in a direction to separate from the port, wherein the skirt is disposed to face toward a space into which the pressure fluid is discharged; and a rigid spring holder having a cup shape and covering the guide member, the spring holder being tapered complementary to the guide member, whereby the spring presses the portion of the guide member in sliding contact with the outer circumference of the first tubular member against the first tubular member.