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Common Questions What valve series is the MK-4821 compatible with
disconnect the leads and use a multimeter set to Ohms
This assembly is HVAC system compatible with popular models like the 48GP
Precise Modulation: Dual 0-10VDC outputs allow for granular control of heating and cooling valves
5" H and weighs roughly 17-18 lbs
Velocity Boiler Works (Crown) 13-142 Nozzle 320819-301 Common Questions What valve seriesThe 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.