Central vacuum pipe is a different size to plumbers pipe. Vacuum pipe is 2″ diameter, whereas plumbing pipe is 50mm. The different sizes are because central vacuum systems originated in America and Canada and they use imperial measurement (inches).Click to see full answer. Considering this, can I use PVC pipe for central vacuum?Yes, you can use standard, plumbing PVC found at any hardware store to run the pipes for your central vacuum system. It not only saves you time not having to scour the planet for hard-to-find central vacuum piping, it also saves you money because standard plumbing PVC is so much more affordable.Subsequently, question is, what is Schedule 20 PVC pipe used for? SCHEDULE 20 PVC PIPE This is our lowest strength PVC pipe, and is most commonly used in gravity fed septic systems, drainage, and stormwater projects. Also, how do you run a central vacuum pipe? To install a central vacuum you: Begin by locating and installing the power unit in the basement, garage, or another out-of-the-way place. Install inlet valves, strategically located throughout the home in wall-mounted (or sometimes floor) receptacles. Run plastic piping from the inlet valves to the power unit. How do you size a vacuum?A rule of thumb to operate by is that the size of a vacuum line should be equal to the size of the vacuum port on the pump. Once the volume, speed and level are achieved, ancillary factors such as controls and filtration factor in.