Go through Check Valve which is the most basic sort of directional control valve. This valve stops fluid flow in one direction while allowing free flow in the opposite. When there is a divide between an area of high pressure and one of low pressure, this valve is vital as a safety mechanism. Check Valve is utilized to maintain system pressure. Inside the pump, it also prevents backspin, water hammer, and upthrust. This valve is provided in a few ranges like ci heavy check valve, ci isi couple check valve, and ci isi pondy check valve.