Noshok
3070 Series 3-Valve Double Block & Bleed, Hard Seat Needle Valves
3070 Series 3-Valve Double Block & Bleed, Hard 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 on the bottom - 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 - 10,000 psi hard seat 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
- 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 | 10,000 psi @ 200 °F |
Orifice size | 0.187" |
Flow coefficient | CV 0.44 |
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 |
Length | 4" standard and 5-3/8" extended length available |
Options | Panel mountings, o-ring materials, handles, packings, regulating stem and stem tips |