Patent ID: 9103448
Filing Date: 2015-08-11
Classification: B23P,F16K,Y10T

Abstract:
1. A plug valve comprising: a valve body having an inlet port, an outlet port and a central chamber extending between the inlet port and the outlet port; an inlet seal segment disposed within the central chamber and having a bore extending therethrough and aligned with the inlet port; an outlet seal segment disposed within the central chamber having a bore extending therethrough and aligned with the outlet port; a plug member disposed in the central chamber, the plug member moveable between an open position, to facilitate fluid flow through the plug valve, and a closed position, to block fluid flow through the plug valve; and a first side segment and a second side segment detached and spaced apart from the first side segment, the first and second side segments disposed between and interlocked to the inlet and outlet seal segments to encircle the plug member, the side segments and inlet and outlet seal segments, when interlocked together, are sized such that the first and second side segments are tensioned to preload the seal segments against the plug member to prevent the flow of fluid between the seal segments and the plug member.