1/2 In Carbon Steel Straight Gauge Siphon ("Pig Tail"), 372C (Sch 40 Seamless)
1/2 In Carbon Steel Straight Gauge Siphon, 372C (Sch 40 Smls)
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In order to prevent live steam from entering a pressure gauge Bourdon tube, a gauge siphon ("pigtail") filled with water should be installed between the gauge and the process line. If freezing of the condensate in the loop of a siphon is a possibility, a diaphragm seal should be used to isolate the gauge from the process steam. Also use siphons whenever condensing hot vapors (not just steam) are present.