Johnson Controls DP140005U21D Transducer 320734-701 This is the burner tube

This is the burner tube assembly itself

it is recommended to match the 4-ton capacity precisely to the evaporator coil's rating to ensure proper oil return and prevent floodback

Compact Integrated Design: Replaces bulky 3-valve bypass assemblies

The mini low pressure control housing measures just 2" x 1-1/2" x 2-3/4"

and includes three diaphragms (note that SPS-30 and SPS-60 models typically utilize only two)

Johnson Controls DP140005U21D Transducer 320734-701 This is the burner tubeThe Johnson Controls DP140005U21D is a high precision low differential pressure transducer engineered for critical airflow monitoring in HVAC and building automation systems. With a 0 5" wc pressure range and unidirectional sensing, this unit is optimized for static pressure control and VAV applications. It features a robust IP67 rated housing, ensuring reliable performance in demanding environments prone to dust and moisture. The 4 20mA output signal