Alfa Laval 45BY-2 1 2-02-U, 2 1 2 Check Ball Valve

This Buna-N ball replacement is designed for Alfa Laval’s 45BY Y-body check valves used with Tri-Clover (Tri-Clamp) connections. The original ball is part number 45BY-2-02-U, and the compatible replacement ball is 45BY-2-02-USP, marketed as a direct substitute that restores sealing performance without replacing the entire valve. In service, the ball seats to prevent reverse flow while allowing forward product passage, a function central to Alfa Laval’s hygienic, low-pressure-drop Y-ball check valve design used in stainless-steel piping. Buna-N material is specified for this replacement ball, and Alfa Laval literature describes the 45BY family as suitable for clean-in-place environments in dairy, beverage, and pharmaceutical processing lines. Replacement parts for the 45BY family, including 45BY-2-02-U/Buna balls, are listed by distributors such as Springer Parts and Rodem, underscoring ongoing availability for maintenance and CIP-ready systems.