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Title: Flexible Element Regulators
Author: Rick F. Mooney
Source: 2005 Appalachian Gas Measurement Short Course
Year Published: 2005
Abstract: Regulators that utilize a single rubber element that performs the same function as both valve and actuator are known as flexible element regulators. The first type of flexible element regulator was developed and manufactured by the Grove Regulator Company in the 1950s. The Grove Flexflo was referred to as an expansibletube type because a tube or rubber sleeve was stretched over a slotted metal core separating the inlet and outlet of the regulator. The tube expanded when flow passed through the regulator.