Steel flanged swing check valve 19s53nzh Pn 40

Steel flanged check valves 19s53nzh PN 40 are designed to automatically prevent backflow of various media, such as water, steam, natural gas, which can create emergency conditions in some cases.

Operating principle

When the working medium is supplied to the valve inlet, the flow presses the disk (valve plate). In the event of backflow or lack of pressure of the working medium, the disk returns to its original position under the action of gravity, blocking the inlet of the branch. This ensures the tightness of the valve due to the pressure of the working medium.

Installation and maintenance 

Check valves 19s53nzh are installed in the working position on a horizontal pipeline with the cover up, and on a vertical pipeline - so that the disk (valve plate) opens upward. The valve installation must be carried out by qualified personnel in compliance with all safety standards. Before installation, it is necessary to check the cleanliness of the internal surfaces of the valve and the smooth operation of the disk. Maintenance must be carried out in accordance with the established standards at the facility.