DBB Pipeline Ball Valves

Floating Ball Valves DBB Flanged 2/3 Piece Design

Our Flanged Style Double Block & Bleed Valves are available in both two and three piece body designs and contain three valves in one single unit – thus reducing weight and saving space across the installation. The two piece design is available in Oliver standard lengths up to ASME Class 300 and in accordance with ASME B16.10 lengths for ASME Class 600 and above. For the three piece design, all valves are have Oliver shortest overall length.

Various other bleed valve options are available and we can work with our customers to adopt a technical project focused approach to ensure complete compatibility.

Product Information

  • 2/3 Piece Bolted Construction
    The 2 and 3 piece bolted construction provides conventional through bolting of the flanged end connections, plus the option of hub or welded ends. The overall lengths of the valve are kept to a minimum and offer considerable cost, weight and space savings over conventional piping methods of double block and bleed, using separate ball valves and spool pieces.
    AMSE B16.10 overall length (ASME Class 600 and above) – 2 piece body
    Allows the replacement of single isolate ball valves with the increased safety of true double isolation, without the need for expensive pipework modifications.
    Full Through Bore
    Valves are available with full bore sizes in accordance with API 6D, ensuring maximum flow for increased production rates and allowing pigging of the pipe line.
    Floating Ball Design
    The floating ball construction ensures maximum weight and space savings, whilst providing reliable and safe isolation up to and including ASME Class 2500

    Available up to 3″ full bore and 4″ reduced bore.
    Floating Ball design with robust lever operation.
    Flanged connections in accordance with ASME B16.5 or API 6A, hub connectors or welded ends also available.
    Integral vent valve with threaded outlet connection.

Product Enquiry

If you would like more information regarding our needle valves, please fill out the form below, or contact us directly on +44 (0) 1565 632 636 or sales@valves.co.uk.

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