Cast steel large-diameter check valve

Introduction to H44H-25C Cast Steel Large Diameter Check Valve

Check valves can also be used on pipelines to supply auxiliary systems where the pressure may rise above the system pressure. Check valves can be mainly divided into swing check valves (rotating according to the center of gravity) and lift check valves (moving along the axis).

The function of check valves is to allow the medium to flow only in one direction and prevent the flow in the opposite direction. Usually, this type of valve works automatically, and under the pressure of fluid flowing in one direction, the valve disc opens; When the fluid flows in the opposite direction, the pressure of the fluid and the self weight of the valve disc act on the valve seat, thereby cutting off the flow.

Installation method of H44H-25C cast steel large-diameter check valve
Swing check valve: The valve disc of the swing check valve is disc-shaped and rotates around the axis of the valve seat channel. Due to the streamlined flow inside the valve channel, the flow resistance is smaller than that of the lift check valve, making it suitable for large diameter applications with low flow rate and constant flow changes. However, it is not suitable for pulsating flow and its sealing performance is inferior to that of the lift check valve. Swing check valves are divided into three types: single disc, double disc, and half disc. These three forms are mainly classified according to the valve diameter, in order to prevent the medium from stopping or flowing backwards and reduce hydraulic shock. Do not let check valves bear weight in the pipeline system. Large check valves should be independently supported to prevent them from being affected by the pressure generated by the pipeline system. During installation, pay attention to the direction of medium flow, which should be consistent with the arrow direction marked on the valve body.