Mounted with a disc that swings on a hinge or shaft, the disc swings off the seat to allow forward flow; when the flow stops, the disc swings back to the seat to block flow moving in reverse. Swing check valves need to be cleaned, so they aren't entirely maintenance-free -, so it's crucial to install them in a convenient place to be inspected.

Mounted with a disc that swings on a hinge or shaft, the disc swings off the seat to allow forward flow; when the flow stops, the disc swings back to the seat to block flow moving in reverse. Swing check valves need to be cleaned, so they aren’t entirely maintenance-free -, so it’s crucial to install them in a convenient place to be inspected.

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