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What does OAO mean
depending on the specific wiring schematic of the York unit
Designed to meet the stringent requirements of ASME Boiler and Pressure Vessel Code Section IV
This genuine Copeland 977-0315-05 unit acts as a critical buffer
Utilizing the Watts 0794063 first check kit restores the seal
Belimo EFB120-S Actuator L99H008 What does OAO meanThe Belimo EFB120 S Actuator is a heavy duty spring return damper actuator designed for reliable fail safe operation in high torque HVAC applications. Delivering 270 in lb (30 Nm) of torque, this 120Vac unit provides consistent performance for large control dampers where positive close off is critical. The "S" model includes two integrated auxiliary switches (SPDT) for end position signaling or fan interlocking, increasing system automation accuracy.