Size (mm) : 200-1000
Pressure rating : 10-63 (bar)
Body Material: All Types of Ductile Cast Iron, Cast Steel, Stainless Steel, Copper Alloys
Float Material: All Types of Stainless Steel
Large orifice Air Valve is recommended as part of safety system for large diameter and long length pipes. Under normal conditions (positive pipeline pressure) this Air Valve is fully closed, it serves as vacuum breaker when the internal pressure in the pipe drops to negative value. For example in case of pipe burst situation with very rapid medium drainage , a huge volume of air is inserted to the pipe through the large orifice of the Air Valve to prevent damages or crumple of the pipes. After pressure increases in the pipe line, the air valve will be closed again. A pneumatic damper is located in the valve for adjusting valve closing speed to avoid damages in the pipe or valve due to rapid closing.