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Cryogenic Globe Valve, Extended Bonnet

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Cold service is where a gate valve is the wrong tool: at −162 °C the seat has to control flow without chattering, and a globe plug does it with progressive travel. Extended bonnet keeps the gland at ambient; CF8M body and cryogenic-treated trim for LNG, LF2 and LF3 for the warmer cold duties. Used on send-out lines, cold-box letdown and loading arms.

General Specifications

Size RangeNPS 1/2" – 8"
Pressure RatingClass 150 / 300 (Class 600 on request)
Design StandardASME B16.34 / BS 6364
Temperature Range−46 °C (LF2), −101 °C (LF3), −196 °C (CF8M)
BonnetExtended bonnet
End ConnectionSocket weld (ASME B16.11), threaded (ASME B1.20.1), butt weld (ASME B16.25) or flanged (ASME B16.5)
PatternStraight-through globe
MediaLNG, liquid nitrogen, liquid oxygen, ethylene
Max. Working Temperature−46 °C to −196 °C

Materials & Coating

Body / BonnetASTM A352 LF2, LF3, or CF8M
Disc / PlugConical plug, cryogenic-treated
SeatIntegral or Stellite overlay
PackingGraphite or PTFE, low-temperature

Applications

LNG send-out Cold box letdown Loading arms Air separation

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