This valve is a high-quality, enclosed 2-way valve with a 1-inch diameter and a Cv of 11.6. It operates within a pressure range of 4-8 pounds and is designed to be used in HVAC systems. The Johnson Controls VG7251NT+3003D valve is built to last and provides reliable performance for HVAC service technicians. Its durable construction ensures that it can withstand harsh environments and frequent use, making it an excellent choice for any HVAC system that requires precise control over fluid flow.