this complete sight glass assembly includes the bracket

eliminating mounting modifications in the field

ensuring the nut does not seize or fail when exposed to steam or corrosive media

The enclosed body construction protects internal silver-cadmium contacts from dust and insect intrusion

Built with a single-pole double-throw (SPDT) switch configuration

Belimo B351 Valve R-448A this complete sight glass assemblyThe Belimo B351 is a high performance 2" 3 way characterized control valve engineered for precision in hydronic HVAC systems. Featuring a 68 Cv rating and a robust nickel plated forged brass body, this valve is designed to handle chilled or hot water up to a maximum temperature of 250F and is compatible with glycol solutions up to 60%. The stainless steel ball and stem provide superior durability and chemical resistance, ensuring reliable operation in