McDonnell & Miller 310447 Valve 30067439-890 Key Benefits for Contractors: OEM

Key Benefits for Contractors: OEM Precision: Guaranteed fit for Lennox 95C59 eliminates the need for field modifications or motor shaft adjustments

Debris Resistance: Designed so the float line remains consistently below the valve seal

ensuring a tight tolerance connection that prevents mechanical hysteresis

Reliable Switching: Built to handle the high-amperage startup current of furnace blower motors

The York S1-024-19082-039 typically operates with an on-delay of 1 to 20 seconds and an off-delay ranging from 40 to 90 seconds

McDonnell & Miller 310447 Valve 30067439-890 Key Benefits for Contractors: OEMThe McDonnell & Miller 310447, specifically the Model 14 B Blow Down Valve, is a high performance full port ball valve engineered for critical maintenance of hydronic heating systems. Designed as a direct replacement for McDonnell & Miller Series 47, 67, and 70B boiler controls, this 14 B valve facilitates the essential "blow down" procedure required to flush sediment and ensure the reliability of low water cut off mechanisms. Featuring a 3 4" NPT