SUPREME AQUA GOLD SCH-80, uPVC PIPES, SIZE-25MM - The High-pressure uPVC Solvent Weld Plumbing System from Supreme Aqua Gold is a durable and cost-effective option for the distribution and transportation of potable water. This system can be used for many different plumbing applications and is relatively simple to install. In addition, it is superior in quality to the traditional GI piping system and lead-free.