42 inch butterfly valves are large-diameter valves designed to regulate and isolate substantial fluid flow in industrial and municipal piping systems. They offer a compact and efficient design that helps reduce space requirements and overall system weight compared to traditional valve types. Suitable for low to medium pressure applications, these valves deliver smooth operation and dependable shutoff performance. Common applications include water and wastewater treatment facilities, power plants, cooling water systems, and large HVAC installations, where 42 inch butterfly valves are valued for their reliability, ease of installation, and cost-effective operation.