Patent ID: 8844902
Filing Date: 2014-09-30
Classification: F16K

Abstract:
1. A valve housing comprising: a main bore; at least one secondary bore having a maximum diameter smaller than a maximum diameter of the main bore; and a stress-reducing groove extending from a first sidewall of the main bore to the at least one secondary bore such that material stresses between the main bore and the at least one secondary bore are reduced, the stress-reducing groove having a substantially uniform length in a direction of a longitudinal axis of the bore from the first sidewall of the main bore to the at least one secondary bore, wherein the stress-reducing groove has a first orifice opening to the at least one secondary bore and a second orifice opening to the main bore, wherein the second orifice has an axial extent in the direction of the longitudinal axis of the main bore and has a circumferential extent in a direction about the longitudinal axis of the main bore, and wherein the axial extent of the second orifice is less than the circumferential extent of the second orifice.