ZECO is a professional manufacturer of swing check valves. Swing check valves are API 6D products. Check Valve is automatically prevented fluid backflow valve, disc of the check valve is opened by fluid force, then fluid flows from the import side to export side. When the import side pressure is lower than the export side, the disc will automatic closed to prevent fluid backflow in the factor of the fluid pressure and gravity itself.
The role of the Check valve is only allowing the medium to flow one direction, and that to preventing the flow direction. Usually, the type of this check valve is automatic, under a direction of flow of fluid pressure, the disc is opened; When fluid is flowing in the opposite direction, fluid pressure and the disc act on the seat, thereby cutting off the flow. The primary function of the check valve is to prevent the backflow of the medium pipe, so check valve is often selected in the export and extraction pump, exhaust pipes, such as the export side. Characterized by the pipeline flows in the medium itself and the forces generated by the automatic opening and closing.
ZECO swing check valve uses arm disc as swing structure, arm and pin shaft are installed inside the body, with few leakage points, eliminating the possibility of external leakage caused by structural problems. The ZECO 900 and 1500 lb swing check valves can also be bolted to the body and bonnet to ensure that the bonnet can be removed for replacement in the event of damage to the middle ring or to the interior for easier maintenance and repair operations. ZECO swing check valve has been widely used in many fields such as oil, gas, refining, industry and so on.