the 211CA3/4B3/4B opens mechanically via the solenoid coil force rather than relying on line pressure

this 100208498 PCB is utilized across both the PB (Heating) and PF (Hot Water Supply) series within its specified size range

it provides the structural rigidity required to transmit torque from the actuator to the linkage without deflection

this kit ensures professional-grade durability in demanding HVACR environments

This unit is the gas valve assembly

Belimo B211+TFRB24-SR Valve Assembly 326058-756 the 211CA3/4B3/4B opens mechanically viaThe Belimo B211+TFRB24 SR is a precision engineered 2 way characterized control valve assembly designed for modulating control in high performance hydronic systems. This 1 2 inch NPT valve features a stainless steel trim and a 1. 9 Cv rating, ensuring durable operation and tight shut off in air handling units and VAV reheat coils. Paired with a TFRB24 SR spring return actuator, the assembly provides 22 in lb of torque and reliable fail safe