Belimo B340+ARB24-SR Valve Assembly R-410A The AVTB series

The AVTB series

The sensing element is curved to provide maximum thermal contact with 1/2" tubing (5/8" O

This 2-1/8 inch copper elbow features precision-machined C x C sweat connections

leak-proof installation in standard top-mounting port configurations

5 VA rating ensures consistent magnetic performance for reliable gas valve operation under varying load conditions

Belimo B340+ARB24-SR Valve Assembly R-410A The AVTB seriesThe Belimo B340+ARB24 SR is a professional grade 1 1 2 inch 3 way characterized control valve (CCV) engineered for precision flow control in hydronic systems. This assembly features a stainless steel ball and stem to resist scaling and corrosion, paired with a Cv of 31 for high demand applications. The ARB24 SR non spring return actuator delivers 180 in lb of torque, ensuring reliable positioning under full differential pressure. Operating on a 24V AC