Labtro Water Circulating Vacuum Pump features Teflon and stainless steel vacuum pumps designed for efficient water circulation. It has a 15-liter water storage capacity, an 8-meter lift, and 2 tapping ports. With a single tap sucking rate of 10 liters per minute, it ensures reliable performance. https://www.labtro.com/uk/en/water-circulating-vacuum-pump/ltvp-501