The XL 1000S Sinapi Chest Drain has all the functionality of the XL 1000 with the added benefit of suction regulation included in the product. The suction regulator can be set between 0 – 60 cmH2O by turning the white nob until it reaches the corresponding setting. The wall suction is adjusted until the red bellows becomes visible. This serves as a feedback system confirming that the set suction pressure is applied.