Waterline pressure vessels with replaceable mambrane. This line is Ideal For every modern installation and can be applied to any type oF pump. A compressor is not necessary since an air cushion, separated from the water by the EPDM membrane, maintains, a constant pressure in the tank. These tanks can also be provided with stainless steel flanges. Available capacities are from 2 to 5000 liters. They can certified by the PED/97/23/CE, WRAS and EN 13831.