573019A | Autofill Combo 1/2"SWT | Caleffi

**Caleffi NCO-573019A Autofill Combo 1/2"SWT** The Caleffi NCO-573019A Autofill Combo is an automatic fill valve designed to maintain the correct water level in hydronic heating systems. This valve features a 1/2" SWT connection and a compact design, making it ideal for use in tight spaces. **Key Features:** * Maintains proper water level in hydronic heating systems * Automatic fill operation * 1/2" SWT connection * Compact design **Benefits:** * Prevents system damage due to low water levels * Eliminates the need for manual filling * Easy to install and maintain * Durable construction ensures long-lasting performance **Applications:** * Hydronic heating systems * Closed-loop systems * Water level control Shop now at our HVAC supply store for the best prices and fast shipping on all your industrial products!