RAYS has completed the delivery of 36 units of 1–4" | Class 300 self-operated micro-pressure regulating valves for the PETRONAD ASIA project, designed for micro-pressure service in the range of 0.05–7.2 kPa.In low-pressure applications, stable control depends on whether small pressure changes can be translated into continuous and reliable valve movement. The valve uses process pressure acting directly on the diaphragm to establish force balance against the spring load, then automatically adjusts valve position as pressure changes.No external actuator or external power supply is required. Regulation is achieved through a direct mechanical response to process pressure variations. Micro-pressure calibration and pressure response verification help ensure stable performance in low-pressure control service.RAYS self-operated micro-pressure regulating valves support stable and continuous pressure control for low-pressure gas systems.…

RAYS is manufacturing a batch of 26–36" | Class 300–600 F51 duplex stainless steel side-entry trunnion ball valves for critical isolation duties in a CNOOC project.Constructed with F51 duplex stainless steel, the valves are designed for applications requiring enhanced corrosion resistance, structural strength and long-term reliability. The DBB sealing configuration supports bidirectional zero-leakage isolation for natural gas, oil and other critical process media.The trunnion-mounted ball design helps reduce operating torque and minimize wear between the ball and seat sealing surfaces, supporting longer service life. Additional protection includes cavity overpressure relief, anti-blowout stem, anti-static device and fire-safe design.A dual stem-sealing system combines an O-ring primary seal with a flexible graphite backup seal. The O-ring supports low leakage in normal service, while the flexible graphite backup helps maintain sealing performance under fire exposure conditions.RAYS combines duplex material capability, DBB isolation and layered safety protection for critical valve applications.…

RAYS is manufacturing a batch of DN600–900 | Class 600 pneumatic-hydraulic side-entry trunnion ball valves for the PETRONAS Prince 2 petrochemical project in Malaysia, serving critical natural gas isolation duties.For large-bore, high-pressure gas service, the valves integrate an internal support plate structure to help reduce pressure-induced body bending and maintain stable concentricity between the ball and seat sealing surfaces.Both upstream and downstream seats adopt a DIB-1 double-piston-effect design. Each seat can independently respond to pressure from either direction, supporting reliable bidirectional sealing. Cavity overpressure is protected through an external safety relief valve.Additional protection includes an anti-blowout stem, anti-static device, fire-safe design, and a dual stem-sealing arrangement with an O-ring primary seal and flexible graphite backup seal. The O-ring supports low leakage under normal operating conditions, while the flexible graphite backup seal helps maintain sealing capability in fire exposure conditions.RAYS combines load-path control, bidirectional sealing and layered safety protection for critical high-pressure natural gas isolation.…

The reliability of high-performance industrial valves depends not only on design and testing, but also on dimensional stability, machining consistency, and assembly accuracy established during the manufacturing process.RAYS Alpha Center has introduced the OKUMA MULTUS U3000 five-axis multitasking machine to further strengthen precision manufacturing capability for complex valve components. With five-axis multitasking and one-setup, multi-process machining, the equipment helps reduce repeated positioning errors and improve machining stability.For sealing parts, shafts, and structural components, a more stable machining process means more reliable dimensional control, better process consistency, and stronger support for project-based valve manufacturing. This is not only a capacity upgrade, but also an important step toward building a more precise, stable, and intelligent manufacturing foundation at RAYS.…

In LNG cryogenic service, sealing performance is governed by long-term stability rather than material strength.At -196C, thermal contraction, elasticity loss, and interface variation continuously alter sealing conditions, making consistency the key challenge rather than initial tightness.RAYS addresses this through spring-loaded seats, a dual sealing system (lip seal + graphite), and an extended stem design that compensates for thermal effects and stabilizes sealing behavior over time.…