Patent ID: 8459608
Filing Date: 2013-06-11
Classification: C10B,F16K

Abstract:
1. A valve seat system comprising: a bifurcated first seat comprising an upper first seat segment biased against a lower first seat, wherein when the upper first seat segment is positioned on top of the lower first seat segment, a cavity is formed between the upper first seat segment and the lower first seat segment, the upper first seat segment being connected to the lower first seat segment by one or more shoulder bolts which limit the downward movement of the lower first seat segment when the position of the upper first seat segment remains fixed, the one or more shoulder bolts extending from the upper first seat segment through the cavity and into the lower first seat segment; at least one spring disposed within the cavity between the upper and lower first seat segments, each spring biasing the lower first seat segment away from the upper first seat segment; a packing gland disposed within the cavity between the upper and lower first seat segments; and a blind in contact with the lower first seat segment, wherein the spring allows the lower first seat segment to move vertically with the contour of the blind as the blind is slid within the valve seat system while the upper first seat segment remains fixed.