الوصف

~One-piee forged hydraulic needle valve (NF and NHF series) features:
1. Max working pressure:
   NF series: **4 bar (***0 psig)
NHF series: **9 bar (****0 psig)
2. Temperature:
 PTFE packing: **4°C to **2°C (**5°F to **0°F)
 PEEK packing: **4°C to **0°C (**5°F to **0°F)
 Graphite packing: **4°C to **9°C (**5°F to ***0°F)
3. One-piece forged valve body.
4. Two stem design, special hardened upper stem, rolling hardened surface of the lower stem.
5. Lubricant of the upper stem threads is separate from medium.
6. Up and down motion of the lower stem instead of the rotating movement reduces the wear of the packing and avoid galling between seat and tip.
7. The valve has back sealing function in full open position.
8. Panel installation.
9. Two handle pins make the handle firmly and lastingly.
*0. Diverse colors of the handle are available.
*1. Every valve is **0% factory tested with nitrogen.