Wear-resistant Sealed Angle Globe Valve

The wear-resistant sealed angle globe valve (Angle Globe Valve) is an industrial control valve that combines an angled flow path with high wear-resistant sealing performance. Featuring a 90° inlet and outlet configuration and precision sealing technology, it is specifically designed for media containing solids, with high viscosity, or with corrosive characteristics. It is widely used in demanding service conditions in industries such as petrochemical processing, coal chemical processing, mining, and power generation, providing reliable on/off control and accurate flow regulation.

In terms of structural design, the valve’s key components emphasize wear resistance and sealing reliability. The valve body is manufactured from WCB cast steel, 304/316L stainless steel, or alloy steel, while high-pressure applications use integral forging to enhance pressure resistance. The ball is made from solid forged austenitic stainless steel, with its surface treated by high-velocity oxygen fuel (HVOF) spraying or fusion hardening processes, incorporating Ni60 nickel-based alloy or CrN / Cr₃C₂–NiCr coatings (thickness ≥ 0.5 mm, hardness ≥ HRC 60). The valve seat sealing surface is overlay welded with STL hardfacing alloys or Stellite alloys (hardness ≥ HRC 56), forming an extremely wear-resistant sealing pair. The valve seat adopts a floating structure combined with an open preloaded disc spring design, which automatically compensates for wear and thermal deformation, preventing sticking. Leakage performance meets ANSI B16.104 Class V or Class VI requirements. The stem is quenched, tempered, and nitrided, and together with a triple flexible graphite packing seal, ensures zero leakage under high pressure. Actuation options include manual, pneumatic, electric, and gear-driven types to suit different control requirements.

Key technical parameters include nominal sizes from DN15 to DN400 (1/2"–16"), pressure ratings from PN10 to PN420 (Class 150 to 2500 LB), and a standard operating temperature range of –29 °C to 350 °C, which can be extended to –196 °C to 650 °C depending on material selection. Connection types include flanged (in accordance with ASME B16.5 and GB/T 9113), threaded, or butt-welded ends, making the valve compatible with various piping systems. Manufacturing and testing strictly follow standards such as ASME B16.34, API 598, and ISO 5208, including hydrostatic tests, seat leakage tests, and non-destructive examinations.

In terms of performance, the valve offers three key advantages. First, it provides excellent wear and corrosion resistance: hard alloy coatings and alloy sealing surfaces can withstand erosion from gas–solid two-phase media, extending service life by three to five times compared with conventional ball valves. Second, it ensures reliable sealing: the floating seat and automatic wear compensation design maintain long-term zero leakage. Third, it delivers efficient flow performance: the compact 90° flow path design results in low flow resistance and is ideal for installations with limited space. This valve is suitable for crude oil, slurry, steam, heat-transfer oil, and corrosive media containing H₂S and CO₂, and is typically applied in coal chemical reactors, mine tailings transport systems, and power plant flue gas desulfurization units under severe service conditions.