Thread Content
1. The valve body is the component that is directly connected to the pipeline (or machinery and equipment), forming the flow channel for the medium. 2. The bonnet, cover, cap, or lid is a component that is connected to the valve body and, together with the valve body (or through other parts such as diaphragms), forms the pressure chamber. 3. Closing elements (discs) are a general term for components used to stop or regulate the flow of a medium, such as the gate plate in gate valves and the valve disc in throttle valves. 4. Disc: The moving part in valves such as gate valves, throttle valves, and check valves. 5. Valve seat (body seat ring, shoulder seated, bottom seat) – a component installed on the valve body that forms a sealing pair with the moving part of the valve. 6. Sealing face: The two contact surfaces between the closing element and the valve seat (valve body) that come into close contact to provide sealing. 7. Stem: The main component that transmits the opening and closing force to the operating element. 8. The valve stem nut (yoke bushing, yoke nut) is the component that forms a moving pair with the valve stem thread. 9. Packing box: A structure on the valve cover (or valve body) that contains packing to prevent the medium from leaking at the valve stem. 10. Stuffing box: A component that fills with packing to prevent the medium from leaking from the valve stem. 11. Gland (gland flange, pne-piece gland) – A component used to compress the packing in order to achieve sealing. 12. Packing (packing rings) are materials inserted into the packing box to prevent leakage of the medium at the double stem area. 13. Packing seat (packing washer): A component that supports the packing and maintains its sealing function. 14. Yoke: A component on the valve cover or valve body, used to support the valve stem nut and the actuation mechanism. 15. Impact handwheel: A handwheel design that utilizes impact force to reduce the effort required to operate the valve.