Name: Check Valve / Dual Plate Spring Load CF8M Wafer Check Valve Size Range: NPS 2"-48" Pressure Range: Class 150-2500 Material: WCB, LCB, WC6, WC9, C12, C5, CF8, CF3, CF3M, CF8M. Design & Manufacture Std.: BS1873, API594. Face to Face Std.: ASME B16.10. End Connection Std.: ASME B16.11, ASME B1.20.1, ASME B16.5, ASME B16.47, DIN2543-2551. Test Standard: ISO5208, API 598, BS 6755. Construction Type: Wafer Type, Spring Load, Dual Plates. Operation: N/A