Ball Check Valve is a simple and reliable valve with the only moving part to block the reverse flow, is a spherical ball. The valve seat is uniquely designed allowing the ball to seat leak-tight without getting wedge into the valve seat.
They are suitable for waste water, industrial applications, agricultural purposes, for viscous e dense liquids.
What is a ball check valve?
A ball check valve functions by means of a ball that moves up and down inside the valve. The seat is machined to fit the ball, and the chamber is conically shaped to guide the ball into the seat to seal and stop a reverse flow.
Operating Principle
Ball check valves contain a ball that sits on the seat, which has only one through-hole. The ball has a slightly larger diameter than that of the through-hole (seat). When the pressure behind the seat exceeds that above the ball, liquid is allowed to flow through the valve. But once the pressure above the ball exceeds the pressure below the seat, the ball returns to rest in the seat, forming a seal that prevents backflow. The ball moves up and down inside the valve depending on the flow and seals against the machined seat when no flow or reverse flow occurs and seals against the seat to stop the reverse flow.
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