Resideo V8043A1311 Valve 319847-401 While the 1-inch bore is

While the 1-inch bore is standard

the entire Aprilaire 4277 assembly should be replaced

Low Power Consumption: Efficient brushless motor design reduces transformer loading and energy overhead

the VAK08AG features corrosion-resistant coated coils and a textured aluminum cabinet secured with stainless steel screws to prevent rust streaks

preventing debris ingress and structural vibration during high-velocity operation

Resideo V8043A1311 Valve 319847-401 While the 1-inch bore isThe Resideo V8043A1311 is a high performance 24V motorized zone valve designed for precise flow control in closed loop hydronic heating systems. Featuring 1 2" press connections, this normally closed zone valve integrates seamlessly with Viega, Apollo, and Nibco press tools, significantly reducing installation time compared to traditional sweat fittings. Engineered for reliability, the low voltage zone valve utilizes a manual opener for convenient