Patent ID: 9127796
Filing Date: 2015-09-08
Classification: F15D,F16L,G01F,G05D

Abstract:
1. A gasket type orifice installed in a fluid passage, wherein the gasket type orifice comprises: i. a first orifice base having a first through-type passage disposed in a central area thereof, the first orifice base having an outer end face and an inner end face, wherein a fitting protruding portion is disposed on the inner end face of the first orifice base, the first orifice base having a maximum outer diameter thereof; ii. a second orifice base having in a central area thereof a second through-type passage that communicates with the first passage of the first orifice base, the second orifice base having an outer end face and an inner end face, wherein a fitting concave portion is formed in the inner end face of the second orifice base; and iii. an orifice plate having an orifice hole formed in a central area thereof, wherein the orifice plate is mounted, by insertion in an airtight manner, between both an end face of the fitting protruding portion of the first orifice base and a bottom face of the fitting concave portion of the second orifice base, wherein the gasket type orifice is installed in the fluid passage, wherein outer end faces of the first orifice base and the second orifice base are disposed as a first sealing face and as a second sealing face, respectively, and a maximum outer diameter of the second orifice base located on a downstream side between the first orifice base and the second orifice base is formed larger than the maximum outer diameter of the first orifice base located on an upstream side, and an outer peripheral edge portion of the inner end face of the second orifice base, located on the downstream side, is disposed as a third sealing face.