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Title: Txt Division, Vapor Corporation
Author: Mack Jacobs
Source: 1976 International School of Hydrocarbon Measurement
Year Published: 1976
Abstract: urgent need existed for a control valve that jld meet certain criteria not available in exisig valve designs, and in 1958, the JET STREAM ber plug type control valve was introduced. ause of this, some readers will find this to be eview of things already known, while others may icover a new valve. Its interesting to note it since 1958 there have been a number of spell ty valves developed in an attempt to meet the icting demands of precise and careful control, : none of them have been able to match the rubber jg and the way it can be worked to provide all : same benefits.