Global Water Solutions Challenger Series 300 Litre Vertical Pressure Vessel INSTALLATION & USE 300 Litre Pressure Vessel ideally suited for a wide range of applications, including booster systems, thermal expansion, heating expansion, irrigation systems, and hydraulic hammer arresting.Vertical tanks are supplied with a base unit.Efficient and cost effective, Challengertanks are designed with a patented controlled action CAD-2 diaphragm assembly. They feature a chlorine resistant 100% butyl diaphragm with a precision moulded copolymer polypropylene liner for superior air and water separation. The CAD-2 diaphragm assembly is clenched together with a positive lock internal clench ring which contains drawdown water in a pre-charged air atmosphere, thus producing separation between the diaphragm and tank wall. Thisair bufferdesign means fewer problems with condensation. Constructed with an FDA approved high grade butyl, the diaphragm assembly seals water in a true non-corrosive chamb