300 The slow closing check valve is a kind of hydraulic driven check valve. When the inlet pressure is greater than the outlet pressure, the main valve is normally opened, and when water hammer occurs at the back end, the main valve is closed;
The opening and closing speed of slow closing check valve can be adjusted by needle valve / ball valve of control pipeline on valve cover

1. Main valve
2. globe valve
3. filter

1. Inlet block valve
2. filter
3. Slow closing check valve
4. Outlet block valve