Patent ID: 8074528

Claim:
A sampling device having a valve unit installed in a process pipeline for receiving a sample of process media flowing through said pipeline, said sampling device comprising: a valve unit body configured to house said valve unit, said valve unit having a valve port which in an open position supplies said sample of process media and in a closed position preventing said sample of process media from being extracted from said pipeline; a valve spindle disposed within said valve unit body, said valve spindle including a head portion, said spindle being spring biased in said closed position such that said head portion creates a seal with said valve port; an operator connected to said valve spindle for moving said spindle from said open position to said closed position; a packing cartridge positioned around said valve spindle, said cartridge having a first cut-out portion and an inner wall, said inner wall in contact with said valve spindle, said cartridge receiving a first O-ring received in said first cut-out portion for exerting a sealing force between said valve unit body and said spindle to prevent process flow from entering said valve unit body, said cartridge further comprising a lip portion located below said first cut-out portion, the lip portion further comprising an extension arm for wiping particles when said spindle moves with said valve unit body, said packing cartridge further comprising a second O-ring and a second cut-out portion for receiving said second O-ring to exert a sealing force between said valve unit body and said spindle to prevent process flow from entering said valve unit body; and a receptacle connected to said valve unit body configured to receive said sample media.