Meet engineering standards
with DBB Valves

Get insights how DBB Valves help you to meet the extremely high occupational health and safety requirements in the process industry.

Occupational health
and safety with
DBB Valves 

Occupational accidents and diseases create a human and economic burden, a serious concern for the process industry like oil & gas, chemical or petrochemical industry. Tackling this challenge requires a collective effort by governments, employers and workers to build, implement and continuously strengthen a preventative safety and health culture.

Isolation Methods:
Advantage of using a
Compact DBB Valve

There are safety regulations such as OSHA and different engineering codes & practices that gives us guideline on the different kinds of isolation, isolation levels and where to use them. Note that each country/region or even local plants have different standards and policies.

Learn when to use a Compact DBB Valve for process isolation rather than other isolation methods.

Checklist for your decision –
Double Block and Bleed Valves 

  • Occupational health and safety requirements
    Safety requirements in the process industry are extremely high.

    When looking for a Double Block and Bleed Valve always consider that the DBB Valve should meet the requirements of OSHA to provide a safe solution for a positive isolation on both sides.
  • Safe locking against unauthorised actuation
    Prefer DBB Valves with a lockable handle/lever. Check if the actuator mounting flanges, unless otherwise specified, are in full accordance with ISO 5211.
  • Certification and Traceability
    Consider that your DBB Valves should have the material test certificate 3.1 according to EN 10204. And an unique code should be stamped on all relevant components linking them with their material and chemical analysis certificates.
  • Fire safe solution
    To ensure a safe working environment prefer DBB Valves which are fire safe tested and certified in acc. with requirements for DBB valves according to API 607 and ISO 10497.
  • Fugitive Emission
    Keep in mind that stringent legal requirements force certain industries to track and limit Fugitive Emissions by using emission-reducing equipment.

    Use DBB Valves which are tested and certified for fugitive emissions in acc. with requirements for DBB valves according to ISO 15848-1.
  • Face-to-face requirement
    Prefer DBB Valves which meet the face-to-face requirements of ASME B16.10 (where feasible). As a consequence the valve can easily be installed into an existing pipeline without the need for any re-work on the pipeline.
    And you can avoid occupational accidents and diseases.

DBB Valves
Features and Specifications

Standards & Pressure
  • DBB full bore valves
    Meets the minimum bore requirements according to API 6D / ISO 14313, Table 1.
  • DBB reduced bore valves
    One size below nominal size of valve with bore according to API 6D / ISO 14313, Table 1.
  • Pressure
    Meets pressure class from 150 to 2,500.
  • Fire safety solution
    Fire safe in acc. to API 607 and ISO 10497
  • Compliant to NACE
    NACE MR0175 and ISO 15156
  • Factory test
    Factory tested in acc. with ASME B16.34, API 6D / ISO 14313, ISO 5208
  • Manufacturing
    In acc. with the pressure equipment directive (PED)
Design & Material
  • Design variations
    – Stem design ensures ensures the anti-blow-out function.
    – Anti-static design used to reduce the static charge generated on the ball due to friction.
  • Bi-directional
    Floating and trunnion ball valves are bi-directional by default.
  • Painting
    DBB valves are available with any kind of adequate coating for environmental protection.
  • Materials of construction
    Stainless Steel 316, Duplex and forged Carbon Steel A105/LF2.
  • Ball seat material
    PTFE, Devlon, PEEK or Metal Seated.
  • Stem seal material
    FKM or HNBR. RGD resistant (Rapid Gas Decompression) or Graphite.
Codes & Specifications
Codes  Specifications 
ASME B31.3 Process Piping
ASME B16.34 Valves – Flanged, Threaded and Welding End
ASME B16.5 Pipe Flanges and Flanged Fittings
ASME B16.10 Face-to-Face and End-to-End Dimensions of Valves
ASME B16.11 Forged Fittings, Socket Welding and Threaded
ASME B16.25 Buttwelding Ends
NACE MR0175/ISO 15156 Petroleum and Natural Gas Industries – Materials
for use in H2S-containing Environments in Oil and
Gas Production
API 6D/ ISO 14313 Specification for Pipeline Valves
Petroleum and Natural Gas Industries – Pipeline
Transportation Systems – Pipeline Valves
API 598 Valve Inspection and Testing
ISO 5208 Industrial Valves – Pressure Testing of Metallic Valves
API 607/ ISO 10497 Fire Test for Soft-Seated Quarter Turn Valves Testing
of Valves. Fire Type-testing Requirements
MSS SP-25 Standard Marking System for Valves, Fittings, Flanges
and Unions

DBB Valve Design
Design makes the difference

2 Piece Design 

DBB Valves – Occupational health, safety and environment (OSHA Engineering Standard)
FLANGED STYLE FEATURES
  • Bore size 1″ through 2″
  • Floating ball design (bore size 1″ through 2″)
  • Trunnion ball design (bore size 2″ only)
  • Acc. to ASME B16.10 standard length
    – Floating ball design class 600, 900 & 1,500 I 1″ also Class 2,500
    – Trunnion ball design class 900, 1,500 & 2,500
  • Flanged connections acc. to ASME B16.5 or EN 1092-1
  • Lockable Handle/lever – removable, gear box operation available. Actuator mounting flanges, unless otherwise specified, are in full accordance with ISO 5211
  • Forged body
  • Vent connections:
    – Integral vent valve – needle type, screwed bonnet or flanged bonnet (OS&Y) – Screwed vent valve – ball valve

3 Piece Design 

DBB Valves – Occupational health, safety and environment (OSHA Engineering Standard)
FLANGED STYLE FEATURES
  • Bore size 1″ through 6″
  • Floating ball design (bore size 1″ through 2″)
  • Trunnion ball design (bore size 1″ through 6″)
  • Length based on supplier standard
    – For short design „Studded Space Saving Design“ available
  • Flanged connections acc. to ASME B16.5 or EN 1092-1
  • Handle lockable and removable, gear box operation as Standard. Actuator mounting flanges, unless otherwise specified, are in full accordance with ISO 5211
  • Forged body
  • Vent connections:
    – Integral vent valve – needle type, screwed bonnet or flanged bonnet (OS&Y) – Screwed vent valve – ball valve
    – For 3“ to 6“ also flanged ball valve, flanged VariAS-Block and flanged monoflange available

Free Whitepaper

Insights about the Compact DBB Valve compared
to other isolation methods to minimize the risk of
occupational accidents and diseases.