met with a reliable solution delivered to site within 15 weeks from order placement (industry standard is 18–24 weeks excluding shipment). The existing motor operated actuators would be removed, and the valves integrated with the new actuators in Saudi Arabia, and fully tested off-site before being taken back and welded into the pipeline.
Khan says: ‘Having worked closely together, a clear understanding of the myriad of challenges SABIC were facing was captured and REXA set about engineering a solution to check all the boxes.’
REXA’s Electraulic™ Actuation is a hybrid of hydraulic and electric actuator technologies utilizing a unique flow match valve (FMV) system. The FMVs allow an electrical motor to transfer a small amount of synthetic oil between two sides of a double acting hydraulic cylinder resulting in valve motion. Continuous motor operation is not required to maintain a position. On average, a REXA actuator contains 95 per cent less oil than a more traditional electro-hydraulic offering.
Equally important is the fact that REXA’s system does not require any regular oil maintenance or contain components which are subject to wear and regular replacement. The system contains no filters or externally vented reservoirs. Every segment of the hydraulic circuit is positive pressure, preventing contamination ingress and ensuring long-term oil cleanliness.