Beckett Igniter 21887U Cordset Valve Pd Timer

The Beckett Igniter 21887U Cordset Valve PD Timer is a delay control part used in an oil burner to manage the timing of solenoid valve operation during the ignition sequence in HVAC systems. It is used to plug into burner valve circuits and a controlled delay before the valve opens, allowing the burner motor to reach stable operating speed before fuel flow. It is placed in similar oil burner assemblies. It coordinates motor start and valve activation to improve ignition performance. It is used in service and retrofit applications to ensure consistent burner sequencing and consistent combustion performance in systems.