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Tubular Gauge Valves - Carbon Steel

Odoo • Image and Text
Odoo • Image and Text

Tubular Gauge Valves - Carbon Steel

  • Features

  • Sizes 1/2" NPT up to 2" Flanged
  • Auto Ball Checks
  • For Glass Tube or Shielded Gauges
  • Ratings

  • Pressure Ratings are subject to the limitations of the gauge glass (Glass)
  • Temperature Ratings are subject to the limitations of the packing (Glass).
  • Materials

  • Body: Carbon Steel
  • Glass Packing on 454/456: Graphite
  • Glass Packing on 442: Viton®* O-Ring
  • Glass Packing on 412: Neoprene
  • Stem Packing: Graphite Composite
  • Stem Packing for 442: Teflon®*

A Special Note About Corrosion

  • Excessive corrosion may result in leakage, glass breakage, and premature valve failure.
  • Be sure all wetted components of the gauge are constructed with materials compatible with the service medium. John C. Ernst Co. does not make chemical compatibility recommendations.
  • See the "Compass Corrosion Guide" or equivalent for material compatibility

Model 454 has an integral bonnet and stem seat.
Model 456 has a union bonnet for stem seat replacement.
Model 442 can have a drain valve as an option.

Model Size NPT Glass OD Glass Length from Centers Rod Length from Centers
412-04 1/2" 5/8" - 2" - 1"
412-05 3/4" 3/4" - 2" - 1"
442-02 1/2" 5/8" - 2" - 1/2"
442-03 3/4" 3/4" - 2" - 1/2"
454-04 1/2" 5/8" - 1-3/4" - 2-1/4"
454-05 3/4" 3/4" - 1-3/4" - 2-1/4"
454-06 1" 3/4" - 1-3/4" - 2-1/4"
456-04 1/2" 5/8" - 1-3/4" - 2-1/4"
456-05 3/4" 3/4" - 1-3/4" - 2-1/4"
456-06 1" 3/4" - 1-3/4" - 2-1/4"
Model Maximum Liquid Pressure @ Temp PSIG / °F Steam Service PSIG Auto Ball Checks
412 500/100°F to 500/425°F 500 Yes
442 500/100°F to 500/425°F N/A Yes
454 600/100°F to 345/400°F 345 Yes
456 600/100°F to 345/400°F 345 Yes

For Glass.
For Shielded Gauges.
*Viton® is a registered trademark of DuPont Dow Elastomers
*Teflon® is a registered trademark of DuPont

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