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Large-caliber cast steel swing check valve are provided with lifting rings for the convenience of hioisting.
Bolted bonnet,and the type of middle flange gasket may be different according to pressure class,CLASS600 check valve may adopt pressure self tightening seal structure.
Disc stop device to prevent disc from being opened too high,thus causing failure to be closed down.
Solid pin is precisely installed and provided with high intensity to ensure operationgal performance and service life of valve.
Ricker arma is given enough intensity. Upon being closed down,it has enough freedom for the closedown of valve disc.
Cast steel swing check valve disc is given enough intensity and rigedity.Disc sealing surface may be built-up welded with matal material or inlaid with nonmental material responding to users requests.