The body and the disc when the determined flow in the system starts.
The expander shortens and the disc shrinks back and let to flow between the body and the disc when the determined flow in the system starts.
It can be used at horizontal and vertical positions.
With its short installation length and hooks on the body it can be installed easily.
The disc hinged on the body is placed within the flow section.
With the start of movement at defined flow direction on the system, the disc leaves the flow section by turning in its axis and allows the flow pass.
Deigned to maintain the minimum head loss on the pipeline.
Due in part to their oversized, heavier discs, typical full-sized swing check valves only fully open at an average flow rate of 11 ft/s. When activated at a lower flow rate, these valves loose true controllability and do not fully open.
A partially open disc creates an obstruction that produces a higher pressure drop and fluttering of the valve disc – disturbing the flow and increasing the chance of water hammer.
