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Welker Probe Regulators provide single-step product pressure reduction from the pipeline, giving a regulated sample supply for chromatographs, H2S analyzers, gravitometers, calorimeters, moisture analyzers or other on-line analysis equipment. Two different models are available for either permanent installation (inserted directly into the line) or removable installation (inserted through a valve without interrupting product flow with the use of Welker's patented Automatic Insertion Device). Thermal fins on the probe offset temperature changes at the point of regulation. In addition, the diaphragm design of the probe regulators gives increased low pressure sensitivity.

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