Belimo G240B-N Valve 321894-708 Persistent rattling or grinding usually

Persistent rattling or grinding usually indicates a loose set screw

making it a critical stock item for field technicians

totally enclosed design protects internal silver-alloy contacts from environmental contaminants

Common indicators include humming or grinding noises

Belimo G240B-N Valve 321894-708 Persistent rattling or grinding usuallyThe Belimo G240B N is a 1 1 2" NPT 2 way globe valve engineered for high precision throttling in hyronic systems and low pressure steam applications. Rated for ANSI Class 250, this valve features a robust bronze body and brass trim, making it a reliable choice for commercial HVAC control valve replacements. With a Cv of 28 and a modified equal percentage flow characteristic, it provides stable linear control for chilled water, hot water, and up to 60%