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Title: Operation And Control Of Rubber Plug Type Regulators
Author: Ray Forbes
Source: 1972 Gulf Coast Measurement Short Course (Now called ASGMT)
Year Published: 1972
Abstract: When consideri ng the regulator that utiIi zes a solid rubber plug for the main working part (i.e. inner valve) it is interesting to note that it is one of the few regulators that was designed within the gas industry and specifically for that industry. If the question of whether the gas industry requi res spec!a 1 des igns for its own use comes up, the answer is an emphatic yes. Features required in a practical gas regulator would be 1) Positive shutoff, 2) very wide rangeability, 3) quiet operation, 4) high capacity, 5) high recovery, 6) simple construction for easy inspection, 7) ability to control on setpoint and, 8) no pressure drop limitations. Many regulators have been designed specifically to incorporate only one or two of these features but by using a solid rubber plug as our inner valve we are able to come up with a regulator that has every one of the assets mentioned above. Before going into the details covering the operation of our rubber plug regulator we might keep in mind that it is a design that has been in use since 1958.

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