A freeze tolerant ball valve is disclosed. A first capacitor, has a first associated leakage current. More precisely, the method for reducing the quantification noise for transmitting a multi-carrier signal comprises an IFFT conversion step, a digital-to-analog conversion step and an analog-processing step of the signal frequencies on a band having a maximal frequency. The staples can be coated with a wound to closure material. The defoaming mechanism includes a defoaming chamber that has a side wall extending in the vertical direction and is used for capturing the air bubbles contained in the liquid and a communication portion that allows the defoaming chamber and the liquid supply path to be communicated with each other in the side wall.