AUTOPOT - 16MM-6MM TEE CONNECTORChoose 9mm for AQUAvalve5 ? 9mm pipe and fittings Choose 6mm for older, pre August 2020 AQUAvalves ? 6mm pipe and fittings. This connector is perfect for reducing 16mm pipe down to 9mm or 6mm pipe, when using large systems. It is inserted in line at the point where an AQUAvalve is positioned. It provides a water tight connection unlike many other types of reduction fittings. It works in exactly the same way as the 16 9mm or 16 6mm cross connector but