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 (Page 42)
• Temperature Ratings are subject to the
    limitations of the packing (Page 45).

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 g auge 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"
442-04 1/2" 5/8" - 2" - 1/2"
442-05 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
412 500/100F to 500/425F 500 Yes
442 500/100F to 500/425F N/A Yes
454 600/100F to 345/400F 345 Yes
456 600/100F to 345/400F 345 Yes

For Glass see Page 42.
For Shielded Gauges see Page 34.
 
*Viton®
is a registered trademark of DuPont Dow Elastomers
*Teflon
®  is a registered trademark of DuPont 
 
Catalog Page 29
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John C. Ernst Co., Inc.
Sparta, NJTel: 973-940-1600Fax: 973-940-1620
Toll Free: 1-888-463-7678

Email: info@johnernst.com

Mailing Address
21 Gail Court
Sparta, NJ 07871
Physical Address
21 Gail Court
Sparta, NJ 07871