Difficult maintenance: The structure of the swing check valve is relatively complex. If maintenance is required, more parts need to be disassembled, which makes maintenance difficult, takes a long time, and has a correspondingly high cost.

Large flow resistance and pressure loss: Since the valve disc, rocker arm and connecting accessories of the swing check valve rotate together, the weight of the valve disc assembly is relatively large, and the torque required to open is large. At the same time, the assembly occupies a large space in the channel, resulting in large flow resistance of the medium and large energy loss.

Poor sealing effect: Especially for gas media, the sealing effect of the swing check valve may be worse, and leakage problems may occur easily.