AS-Schneider, a producer of custom valves, has announced a new design. This design is specific for instrument piping. The company created its “Double Block & Bleed” series 20 years ago. Since then, they have reported many improvements, and this new system is one of these innovations. The company based the design on the standard SHELL MESC SPE 77/165 and EEMUA 182.
As the title implies, AS-Schneider’s engineers mount these valves to the pipework. Thus, at least the first block valve coming from the process must have a robust process design. Process and instrument valves have different requirements, depending on function, medium, and pressure- volume-product. The potential hazard of pressure equipment is a function of these parameters.
Users continue to report a first-rate experience with our VariAS-Blocks. Thus, we developed a DBB ball valve for instrument piping. The main goal was to have a cost-effective solution. This goal was workable due to lower requirements for instrumentation. There’s also no need for an integral robust primary isolation valve. The result was our BA Series DBB ball valve, which has a very compact design. It’s lighter and takes up less space. It also boasts high-quality components for reliability and safety.
Advantages of an Instrument DBB ball valve
Double Block & Bleed valve systems are standard installations, and the oil and gas industry makes heavy use of them. Such installations of DBB valve systems have become a regular practice. You can even find them on offshore platforms. We connect the DBB system using three singles and a bleed valve between two isolation valves.
It’s better to use the BA Series instead, as one single in this series incorporates the three valves in one body. One of the advantages is lower costs. The savings are most evident for exotic materials like Alloy 625 or similar. The BA Series DBB also has fewer potential leak paths. Also, it weighs less, which is a boon for ships and offshore applications. It reduces costs without compromising safety. Plus, it’s easier to install, and it’s space-saving.
AS-Schneider instrument DBB valves are suitable as standard for up to 6,000 PSI (414 bar). They are also available in a high-pressure version up to 10,000 PSI (689 bar). All AS-Schneider valves feature an anti- blowout system.