Velocity Boiler Works (Crown) 13-142 Nozzle 320819-301 This external protector kit functions

This external protector kit functions as a high-reliability overload switch

Common Questions What valve series is the MK-4821 compatible with

Precise Modulation: Dual 0-10VDC outputs allow for granular control of heating and cooling valves

Soot accumulation and improper flame impingement are the primary causes

This HVAC replacement pilot burner supports both thermocouple and thermopile configurations

Velocity Boiler Works (Crown) 13-142 Nozzle 320819-301 This external protector kit functionsThe Velocity Boiler Works (Crown) 13 142 Nozzle is a high precision Delavan 0. 75 80A oil burner nozzle designed for service professionals requiring exact fuel atomization in residential and light commercial oil burning appliances. This Type A hollow cone nozzle delivers a flow rate of 0. 75 GPH at 100 PSI with an 80 degree spray angle, making it ideal for flame retention burners and combustion chambers where a stable, low noise flame is required.