Emerson Fisher 1F125637012
1. **Function**
Live-loaded Belleville spring for packing assembly, maintains constant compression force on PTFE packing rings to minimize fugitive emission, compensate packing wear and thermal expansion.
2. **Stem Size**
For 3/4 inch (19.1 mm) stem
3. **Material**
Stainless steel (17‑7PH / 316SS)
4. **Working Temperature Range**
-50 ℃ ~ +425 ℃ (-58 ℉ ~ +797 ℉)
5. **Design load**
Calibrated load for Fisher ENVIRO‑SEAL single packing configuration
6. **Application limit**
Suitable for single PTFE V-ring packing only; not for double packing with lantern ring
7. **Certification**
Compliant with ISO 15848‑1 fugitive emission standard
>
> Note: This is a small spare part, not a complete valve.
> Related part number series:
> 1F125437012 (1/2″ stem), 1F125537012 (5/8″ stem), 1F125637012 (3/4″ stem)