Swing Swing Check Valve - ASME | Valvosider Valvosider Swing Check Valve - ASME | Valvosider The Swing Check Valve by Valvosider, compliant with ASME standards, is designed to prevent backflow in piping systems. It is available in various pressure classes and sizes to accommodate different operational needs. The valve classes and corresponding size ranges are as follows: - Class 150: Sizes 2" to 48" (Fig. No. 470) - Class 300: Sizes 2" to 48"... View