FACT: 100% of every central vacuum company in America will tell you; never use regular plumbing PVC when installing a central vacuum system in your home. Plumbing PVC inside wall surfaces are too rough and elbows are too tight and will provide insufficient airflow. Central vacuum PVC pipe has a thin wall and will prevent clogging for many years to come. This thin wall is a schedule 20 gauge as opposed to a schedule 40 gauge. We will only sell you the highest quality virgin thin wall PVC tubing ( with bell end). NO REGRINDS. We only use top-quality fittings which are made in stainless steel molds and are 25% heavier than inferior fittings.
FACT: No true Professional central vacuum installer in the World should ever recommend using plumbing PVC, elbows, fittings, adapters, and so on, to be installed as a central vacuum installation substitute. Install it the right way the first time. Use what professionals demand and install: Premium quality virgin "Flomax Gold", the Superior Central Vacuum PVC Pipe!