Double Block & Bleed Valves – API – ASME – ISO

 

Norvalves

 

The increasing use of block and bleed valve manifold in piping system coupled with uncertainty regarding their applications and absence of a recognized standard has lead to various type of DBB valves and combination valves. DBB valves represents over 30% of Norvalves revenues.

Norvalves design and manufacture Double Block and Bleed valves in our own engineering and productions facilities. The valves are designed according to international standard such as ANSI, API, EN and others.

We deliver Double Block & Bleed valves according to almost all standards including NORSOK, BP, TR2000, MAERSK, AMEC, ConocoPhillips, Wintershall, Total and Chevron.

All components are machined from bar or forged bar material which gives an unique productions flexibility. All valves are tested according to international standards in our in-house testing department before delivery.

 

Norvalves

 

DBB Ball Valve

Double Block & Bleed valve with Floating or trunnion ball valves. Can be delivered with ball or needle bleed valve.

  • PED 97/23/EC
  • Firesafe design ISO 10497/API 6A
  • Antistatic design
  • Anti Blow-out stem
Flange size:1/4″ – 4″
Bore size:1/4″ – 4″
Class:150lb to 2500lb
Connections:RF, RTJ, FF, NPT, BSP, WN, BW, SW, SPO, API, SAE, PN, Techlock, Greylock
Interface:Handle, bar stem, stem extension, actuated
Material:Carbon Steel, Stainless Steel, Duplex, Super Duplex, Titanium, Inconel, 6MO, Aluminium Bronze, Monel, Hasteloy

Other material and setup by request

Norvalves

DBB Gate Valve

Double Block & Bleed Gate valves. Can be delivered with ball or needle bleed valve.

  • PED 97/23/EC
  • OS & Y
  • Renewable seats
  • Back-seated stem
  • Rising stem
Flange size:1/4″ – 4
Bore size:1/4″ – 4
Class:150lb to 2500lb
Connections:RF, RTJ, FF, NPT, BSP, WN, BW, SW, SPO, API, SAE, PN, Techlock, Greylock
Interface:Manual wheel, bar stem, stem extension, actuated
Material:Carbon Steel, Stainless Steel, Duplex, Super Duplex, Titanium, Inconel, 6MO, Aluminium Bronze, Monel, Hasteloy

Other material and setup by request

Norvalves

DBB Globe Valve

Double Block & Bleed Globe valves. Can be delivered with ball or needle bleed valve.

  • PED 97/23/EC
  • OS & Y
  • Renewable seats
  • Rising stem
  • Back-seated stem
  • Ball, Plug and Needle Disc type
Flange size:1/4″ – 4″
Bore size:1/4″ – 4″
Class:150lb to 2500lb
Connections:RF, RTJ, FF, NPT, BSP, WN, BW, SW, SPO, API, SAE, PN, Techlock, Greylock
Interface:Manual wheel, bar stem, stem extension, actuated
Material:Carbon Steel, Stainless Steel, Duplex, Super Duplex, Titanium, Inconel, 6MO, Aluminium Bronze, Monel, Hasteloy

Other material and setup by request

Norvalves

 

DBB Needle Valve

Double Block & Bleed Needle Valve.

  • PED 97/23/EC
  • Outside screw
  • Non-rotating needle
  • Back-seated stem
  • Integral & renewable seats
Flange size:1/4″ – 4″
Bore size:Up to 10mm
Class:150lb to 2500lb
Connections:RF, RTJ, FF, NPT, BSP, WN, BW, SW, SPO, API, SAE, PN, Techlock, Greylock
Interface:Manual wheel, bar stem, stem extension, actuated
Material:Carbon Steel, Stainless Steel, Duplex, Super Duplex, Titanium

Other material and setup by request