... 2. Wafer & Lug Type:DN50-DN600, PN10/PN16 1. Flanged Type butterfly valve features: ** Structural design complies ... exchangeability.** Excellent sealing effect, leakage free even under ±1 degree offset between sealing ring and seat. ** Self- ... -DN600Pressure rating PN10/PN16Body pressure1.5/2.4MPaSeat pressure1.1/1.76MPaOperation temperature-50-180MediumWater, oil,airMaterialBodyDuctile cast iron, ...