Noshok
2170 Series 2-Valve Block & Bleed, Soft Seat Needle Valves
2170 Series 2-Valve Block & Bleed, Soft Seat Needle Valves
Key Features
- Combines isolating and venting in a single valve, eliminating the need for
tubing and fittings - Block valve isolates the downstream process fluids and the bleed valve
exhausts upstream fluids enabling instruments to be removed without
disturbing the permanent piping installation - The 1/4" NPT vent plug is located 90° to the left and may be removed and replaced with exhaust piping to direct the fluids to a safe location
- 100% helium leak tested to 1 x 10-4 ml/s for guaranteed performance
and reliability - 6,000 psi pressure rating @ 200 °F
- Replaceable Delrin® seat, and straight through porting for bidirectional,
high capacity flow and easy roddable cleaning - PCTFE or PEEK soft seat optional
- 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 packing optional - 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 | 1/2" & 1/4" NPT Male-female & Female-female configurations available, right venting optional |
Pressure ratings | 6,000 psi @ 200 °F |
Orifice size | 0.187" |
Flow coefficient | CV 0.76 |
Steam seal & type | All 316 stainless steel stems with FKM o-ring and PTFE back-up ring below the threads, PTFE packing optional |
Length | 4" standard and 5-3/8" extended length available |
Options | Panel mountings, o-ring materials, handles, packings, regulating stem and stem tips |
Catalogs
Catalog Pages
246.3 kB