Features
•
Vessel Connection Sizes:
1/4" NPT up to 1" 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: 316 Stainless Steel
• Glass Packing: Viton®*
• 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 416 has a Viton O-Ring for the glass packing, and the
retainer is 15-7SS. Drain Valves are optional..
| Model |
Size
NPT |
Glass
OD |
Glass
Length from Centers |
Rod
Length from Centers |
| 416-04 |
1/2" |
5/8" |
-
2" |
-
1/2" |
| 416-05 |
3/4" |
3/4" |
-
2" |
-
1/2" |
| 440-02 |
1/4" |
5/8" |
-
2-1/4 |
-
1-1/4" |
| 440-03 |
3/8" |
5/8" |
-
2-1/4 |
-
1-1/4" |
| 440-04 |
1/2" |
5/8" |
-
2-1/4 |
-
1-1/4" |
| 440-05 |
3/4" |
5/8" |
-
2-1/4 |
-
1-1/4" |
| 447-04 |
1/2" |
5/8" |
-
2-3/4" |
-
1-1/2" |
| 447-05 |
3/4" |
5/8" |
-
2-3/4" |
-
1-1/2" |
| 448-04 |
1/2" |
5/8" |
-
2 |
-
1-1/2" |
| 448-05 |
3/4" |
5/8" |
-
2 |
-
1-1/2" |
| Model |
Maximum
Liquid Pressure @ Temp
PSIG
/ °F |
Steam
Service
PSIG |
Auto
Ball Checks |
| 416 |
500/100°F
to 500/425°F |
N/A |
Yes |
| 440 |
150/100°F
to 150/300°F |
N/A |
No |
| 447 |
300/100°F
to 300/300°F |
N/A |
Optional |
| 448 |
250/100°F
to 250/400°F |
N/A |
No |
For
Glass see Page 42.
For Shielded Gauges see Page
34. |
