Cost-Effective Maintenance: Avoids expensive valve body removal and re-piping by replacing only the internal wear components

Installation Flexibility: Compact design with 1/2" NPT threading allows for easy mounting in tight mechanical spaces

reducing truck stock requirements for 3/4 HP blower motors

ensuring the zone remains open during power loss to prevent equipment high-limit trips

Is the York 024-39400-002 a direct drop-in for the old VFD66 series

Lennox 50W91 Lamp 320788-704 Cost-Effective Maintenance: Avoids expensive valveThe Lennox 50W91 is a high output 30 inch germicidal UV C lamp engineered specifically for technical integration within Healthy Climate air purification systems and compatible Lennox commercial rooftop units. Designed as a direct fit HVAC UV lamp replacement, this component emits ultraviolet C radiation at a 254nm wavelength to effectively neutralize airborne pathogens and prevent the colonization of microbial growth on evaporator coils and drain