Noshok
400 Series Standard, Hard Seat Needle Valves
400 Series Standard, Hard Seat Needle Valves
Key Features
- 100% helium leak tested to 1 x 10-4 ml/s for guaranteed performance
and reliability - 10,000 psi pressure rating @ 200 °F
- Blow-out proof stem provides a secondary stem seal in the full
open position - FKM o-ring seal and PTFE back-up ring below the stem threads to
protect from corrosion and galling; PTFE or Grafoil® packing optional
(certain NPT sizes only) - All stems are 316 stainless steel
- All stem threads are rolled for strength and ease of operation
- One-piece bonnet with a metal-to-metal seal to the valve body below
the bonnet threads - Slotted spring pin to prevent accidental loosening
- Vinyl dust cap for bonnet and stem (non-packing)
SPECIFICATIONS | |
Materials | Zinc-nickel plated steel, electropolished 316 stainless steel |
Connections | 1/4", 3/8", 1/2", 3/4", 1", 1-1/4" & 1-1/2" NPT 7/16"-20 UNF (#4 SAE, J1926) Male-female, Female-female, in-line and angled configurations |
Pressure ratings | 10,000 psi @ 200 °F |
Orifice size | 1/4" - 1/2" NPT: 0.187" 3/4" - 1-1/2" NPT: 0.438" |
Flow coefficient | 1/4" - 1/2" NPT: CV 0.44 3/4" - 1-1/2" NPT: CV 2.70 |
Steam seal & type | All 316 stainless steel stems with FKM o-ring and PTFE back-up ring below the threads, PTFE or Grafoil® packing optional for 1/4", 3/8" & 1/2" NPT only |
Options | Panel mountings, o-ring materials, handles, packings, regulating stem and stem tips |
Catalogs
Catalog Pages
271.3 kB