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The Dublok Concept

With an ever-increasing emphasis on safety, the traditional method of bolting several flanged valves together to provide multiple isolation, where previously a single isolation valve would have been judged sufficient, created a number of additional concerns, namely the size and weight of the whole assembly.

Increased weight and length necessitates more supports and results in higher nozzle loadings and therefore increased vulnerability to vibration and impact. Traditional convention in the valve industry has resulted in unnecessarily heavy and bulky flanged joints within commonly used valve assemblies such as Double Block and Bleed.

Additionally, having more valves and fittings means that more potential leak paths are created when fugitive emissions are becoming an increasingly sensitive safety and environmental issue. The unique Dublok concept minimises these problems.

Dublok pioneered the concept of Modular Construction Valve Assemblies by integrating as many valves as possible into a single manifold block. In addition, with a range of end connections (i.e. raised face, ring type joint, threaded, hub end, weld connections etc.) linked by strong bolted firesafe joints this modular approach gives an almost unlimited range of configurations, which can be tailor-made to suit particular customer requirements.

The Dublok Concept

Cross section view of a typical Dublok injection valve



The Dublok concept has unrivalled versatility due to its interchangeable body sections and end connections and this unique ‘building block’ principle enables a wide range of valve combinations to be produced quickly and cost effectively, resulting in a lighter, more compact and robust valve solution.

The Dublok concept has been extremely successful and Dublok valves are specified and used by the leading operators throughout the world.