What should we do when a blockage occurs at the S-pipe valve?

Blockage at the discharge port of the distribution valve

Phenomenon: sudden interruption of pumping system action, with strange noise and strong vibration, but no corresponding vibration in the pipe.

Exclusion method: Pour 15-30 litres of cement slurry into the hopper and make the pump start repeatedly in the forward and reverse direction to force open the pathway. If this method is not effective, it can only be excluded manually and it is recommended to remove the connected pipe and remove the debris inside the valve.

What to do when the S pipe valve is blocked?

Blockage at the S pipe valve

The main reason is that after the concrete is pumped, it is not flushed with high-pressure water in time, resulting in residual concrete inside the pipe, which gradually thickens and solidifies over time, causing blockage.

Exclusion method: After pumping concrete, use high pressure water to flush the pump body and S pipe clean. If flushing is not effective, use a brazing pick to remove the residue until it is completely cleared.