Features
•
Vessel Connection Sizes:
3/8" to 3/4" NPT
• Auto Ball Checks Available
• 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: Brass
• Glass Packing: EPDM
• Stem Packing: 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
|
Size
NPT
|
Glass OD
|
Glass Length from Centers
|
Rod Length from Centers
|
|
401-03
|
3/8" |
5/8"
|
- 1-1/4"
|
+ 3/4"
|
|
401-04
|
1/2"
|
5/8"
|
- 1-1/4"
|
+ 3/4"
|
|
401-05
|
3/4"
|
3/4"
|
- 1-1/4"
|
+ 3/4"
|
|
402-04
|
1/2"
|
5/8"
|
- 1-1/4"
|
+ 3/4"
|
|
403-03
|
3/8"
|
5/8"
|
- 1-1/4"
|
+ 3/4"
|
|
403-04
|
1/2"
|
5/8"
|
- 1-1/4"
|
+ 3/4"
|
|
405-03
|
3/8"
|
5/8"
|
- 1-1/2"
|
+ 3/4"
|
|
405-04
|
1/2"
|
5/8"
|
- 1-1/4"
|
+ 3/4"
|
|
405-05
|
3/4"
|
3/4"
|
- 1-1/4"
|
+ 3/4"
|
|
Model
|
Maximum Liquid Pressure @ Temp PSIG
/ °F
|
Steam Service
PSIG
|
Auto Ball Checks
|
|
401-03
|
300/100°F
to 125/350°F |
N/A
|
No
|
|
401-04
|
300/100°F
to 125/350°F |
N/A
|
No
|
|
401-05
|
100/100°F
to 50/300°F |
N/A
|
No
|
|
402-04
|
400/100°F
to 200/400°F |
N/A
|
Yes
|
|
403-03
|
300/100°F
to 125/350°F |
N/A
|
No
|
|
403-04
|
300/100°F
to 125/350°F |
N/A
|
No
|
|
405-03
|
200/100°F
to 100/300°F |
N/A
|
Yes
|
|
405-04
|
400/100°F
to 200/400°F |
N/A
|
Yes
|
|
405-05
|
400/100°F
to 200/400°F |
N/A
|
Yes
|
For
Glass see Page 42.
For Shielded Gauges see Page
34. |
