Industrial valve specialist AS-Schneider has developed a manifold especially for use on FPSO vessels. The monoflange with Dual Double Block & Bleed Function is noteworthy for maximum operational reliability and minimum weight – properties that are critically important in floating systems for extraction of crude oil and natural gas.
AS-Schneider originally developed the manifold as a special solution for a company from the energy sector. The company, which operated an FPSO vessel for offshore extraction of crude oil and natural gas, wanted to make its measuring equipment particularly reliable by using two Double Block & Bleed valves in series. Moreover, it wanted to keep the weight as low as possible. A combination of two separate valves was ruled out owing to the great inherent weight and resulting susceptibility to vibrations.
AS-Schneider’s product designers therefore set to work to find a way of mounting six valves – and therefore a Dual Double Block & Bleed Function – in one valve body. For this purpose, they optimised the arrangement of the valves and the design of the connecting flow paths. The result is a monoflange with six integral valves that weighs only slightly more than a normal standard flange. The hook-up is therefore insensitive to oscillations and vibrations. As only one valve body is required, the risk of leaks is also low.