Swing check valve Elephant VCD1313E-F body material - cast iron GGG50, seal - EPDM, disc - cast iron GGG50, flanged, with swashplate and counterweight

Check valves Elephant VCD1313E-F are designed to prevent changes in the direction of flow of the working medium in the pipeline in the opposite direction. The check valve disk is fixed on an axis located with eccentricity relative to the horizontal axis of symmetry. When the medium is supplied in the direction under the disk, the valve opens, while the disk is held in the “open” position due to the lifting force arising from the high-speed pressure of the flow. After the supply of medium is stopped, the disk smoothly closes under the influence of its own weight, which creates a closing moment due to the displacement of the center of gravity of the disk valve relative to the axis of rotation. The counterweight keeps the disc fully open, reducing flow resistance, and also promotes better sealing when closed at low pressure. Fast closing helps to avoid damage to the pump due to backflow, slow closing helps to avoid the effect of water hammer, which protects the pipeline.