644369A-3BY | 1"SWT 3wByP 24V 12 Cv | Caleffi

**Caleffi 644369A-3BY 1" SWT 3-Way Bypass Valve** The Caleffi 644369A-3BY is a 1-inch SWT 3-way bypass valve designed for use in hydronic heating and cooling systems. This heavy-duty valve features a brass body for durability and a PTFE seal for leak-proof performance. The 3-way design allows for flow diversion, bypass, or isolation of a specific zone within the system. **Key Features:** * 1-inch SWT connection size * Brass body for strength and longevity * PTFE seal for superior leak resistance * 3-way design for flow diversion and isolation * Suitable for hydronic heating and cooling applications **Applications:** * Bypassing a circulation pump * Isolating a zone for maintenance or repairs * Diverting flow to a specific area of the system **Technical Specifications:** * Pressure Rating: 250 PSI * Temperature Rating: 250°F * Handle Type: Lever handle * Weight: 2.5 lbs. **Benefits:** * Reliable flow control and isolation * Durable construction for long-term use * Leak-proof performance * Easy installation and maintenance Trust our HVAC supply store for all your Caleffi products. We offer unbeatable prices, fast shipping, and exceptional customer service. Shop now and upgrade your hydronic system with the 644369A-3BY Bypass Valve today!