| 主权项 |
1. A relay device, comprising:
an inlet passage; an outlet passage spaced apart from the inlet passage; a first flow passage fluidly coupled to the inlet passage and the outlet passage; a plug assembly disposed in the first fluid passage, the plug assembly configured to regulate flow of fluid between the inlet passage and the outlet passage; and a second flow passage configured to direct fluid flow around the plug assembly between the inlet passage and the outlet passage, wherein the plug assembly comprises a first plug, a second plug, and a third plug coupled therebetween, wherein the first plug and the second plug are disposed near, respectively, the inlet passage and the outlet passage, and wherein the second flow passage has a first end proximate the first plug and a second end proximate the second plug. |
