English to Italian Tech/Engineering Manufacturing

At drumming facilities it is often advantageous to sample the product stream that is filling the drums. Tap sampling is the customary procedure in these cases:
• Taps are typically 5 mm or 10 mm (¾ inch or ½ inch) valve taps - if a plug is inserted in the end of the valve care must be exercised in removing it as any leakage from the valve will cause a pressure build up between it and the plug - it is preferable to have facility personnel remove plugs.
• A delivery tube, long enough to reach the bottom of the container is required to allow submerged filling - see diagram.
• Carefully flush the tap prior to sampling.