Belimo B253 Ball Valve 328140-751 providing a seamless cut-out at

providing a seamless cut-out at 130°F and a vertical cut-in at 100°F

a high-temperature EPDM O-ring

Avoid applying grease directly to the O-rings before they are seated in the U-cups to prevent displacement

high-side pressure bleeding into the low-side

The unit utilizes sealed ball bearings and a double-sided flat shaft for secure coupling

Belimo B253 Ball Valve 328140-751 providing a seamless cut-out atThe Belimo B253 is a high performance 2 way characterized control valve designed for precision modulation in large scale HVAC systems. Featuring a 2 inch NPT female pipe thread connection and a generous 120 Cv flow coefficient, this unit is engineered for hot or chilled water applications, supporting up to a 60% glycol solution. The nickel plated forged brass body housing a 304 stainless steel ball and stem ensures long term resistance to corrosion