Gland Seal Globe valve - STOBU | ARI Ari-Armaturen Globe valve - STOBU | ARI The ARI-STOBU® valve series, includes stop valves with various configurations, such as straight-through, Y-pattern, and angle-pattern valves. These valves come in materials like grey cast iron, SG iron, cast steel, forged steel, and stainless steel. They are available with both flanged and butt weld ends. View