Piston Piston Check Valve 'Y' Type - ASME | Valvosider Valvosider Piston Check Valve 'Y' Type - ASME | Valvosider The Piston Check Valve 'Y' Type by Valvosider is designed according to ASME standards and is available in various pressure classes and sizes. It is suitable for a range of applications, offering reliable performance in preventing backflow. The valve is available in the following configurations:- Class 150: Sizes 2" to 24" (Fig. No. 490PC) - Class 300:... View