Pressure range: 1.6MPa~25.0MPa(CLASS150~2500);
Size range: DN40~DN900(1-1/2"~36");
Body Material: A216 WCB, C5, WC6, WC9, LCB, LCC, CF8, CF8M, CF3, CF3M, MONEL;
End connection: Flange/BW
Applicable medium: Water, oil, gas, and other causticity medium;
Structural Features:
1. Bolted bonnet, and the type of middle flange gasket may be different according to pressure class; Class 600 check valve may adopt pressure self tightening seal structure;
2. Disc stop device to prevent disc from being opened too high, thus causing failure to be closed down;
3. Solid pin is presisely installed and provided with high intensity to ensure operational performance and service life of valve;
4. Rocker arm is given enough intensity. Upon being closed down, it has enough freedom for the closedown of valve disc;
5. Valve disc is given enough intensity and rigidity. Disc sealing surface may be built-up welded with metal material or inlaid with nonmental material responding to user's requests;
6. Large-caliber check valves are provided with lifting rings for the convenience of hoisting.