Patent ID: 9127802
Filing Date: 2015-09-08
Classification: F16L

Abstract:
1. A pipeline pig comprising: an elongate body having a longitudinal axis; annular front and rear supports projecting radially from the elongate body, wherein each support has an upstream side and a downstream side, the front support forming therethrough at least one first fluid passage permitting fluid flow from the upstream side of the front support to the downstream side of the front support, and the rear support forming therethrough at least one second fluid passage permitting fluid flow from the upstream side of the rear support to the downstream side of the rear support, wherein the first fluid passage and the second fluid passage are positioned outside of the elongate body; wherein the at least one first fluid passage includes a plurality of circumferentially spaced first fluid passages formed through the front support, outside of the elongate body, and radially offset from the longitudinal axis a launch valve to move from an open position to a closed position to close the at least one first fluid passage, wherein the launch valve comprises: