Double Block & Bleed Valve

Aug. 8, 2012

NOSHOK announces the new 3070 Series Double Block & Bleed Valve with redundant isolation valves and a dedicated vent valve to ensure additional safety in hazardous media applications. NOSHOK 3070 Series Double Block & Bleed Valves have a 10,000 psi hard seat pressure rating @ 200 °F. The block valve isolates the downstream process fluids, while 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 or gases to a safe location.           

  • All NOSHOK valves are 100% helium leak tested to 1 x 10-4 ml/s for guaranteed performance and reliability 
  • 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 bonnet loosening 
  • Vinyl dust cap for bonnet and stem (non-packing)
  • 10,000 psi hard seat pressure rating @ 200 °F
  • blow-out proof stem