High-Pressure Water Injection Valve Supply for a Middle East Offshore Platform
Project Overview
The project supplied API 6D trunnion-mounted ball valves, high-pressure globe valves and check valves for the high-pressure seawater injection system of a Middle East offshore platform, for injection pump outlets, distribution manifolds and wellhead injection lines.
Challenge
The offshore platform has limited space and very short maintenance windows. Injection pressure is high (Class 1500 and above) and the medium is corrosive oxygenated seawater. The owner requires compliance with the relevant API 6D standards, NACE MR0175 compliant materials, sealing materials suited to seawater service, and full material and test documentation delivered with the valves.
Our Solution
Water injection manifolds and wellhead injection lines use API 6D trunnion-mounted ball valves (DBB double block and bleed design, Class 1500, RTJ ends) in duplex stainless steel meeting NACE MR0175. Check valves use an axial flow design to reduce pressure loss. Every valve is shell- and seat-tested before shipment, with EN 10204 3.1/3.2 material certificates and third-party inspection reports supplied with the delivery.
Results
The valves passed owner and third-party incoming acceptance on schedule; after commissioning, injection pressure was stable with zero leakage. Valves and spares for the platform's later injection wells continue to be supplied by Vexval, and the client added Vexval to its approved supplier roster for offshore projects.