TotalEnergies EP Denmark has installed seven anti-surge valves fitted with additively manufactured nickel-based alloy disk stacks from IMI. The parts work in a sour-gas environment where hydrogen sulphide (H₂S) partial pressures reach up to 3.3 kPa. The 3D printed parts passed DNV-ST-B203 AMC Level 3 qualification, and tests showed they performed as well as conventionally…