Browning BX72 Belt 322838 753 it is standard industry practice it is standard industry practice to replace the filter drier whenever the refrigerant circuit is opened to prevent moisture and debris from clogging the new valve orifice Key Benefits Precise Thermal Sensing: Features an 84 inch vapor filled capillary for accurate temperature detection across large refrigeration units this BX section belt utilizes precision molded cogs to significantly improve flexibility and heat dissipation compared to standard wrapped belts it is recommended to replace all belts in a set rather than mixing original BX72 stock with Gen II variations