Aspria Vacuum SystemsPlastiFlexUniversal Round Door Inlet WhiteCentral Vacuum > > http://www.aspria.systems/products/plastiflex-8016-universal-round-door-inlet-whiteAn industry standard for low-volt and pigtail type CVS installations the SV8016 white inlet valve features a conventional rectangular frame with a round door and textured finish. The Plastiflex round door inlet is durable vinyl valve door in white color. Also available in almond, Plastiflex inlets are manufactured in Canada and are color matched to common switch plates and outlet covers. With a spring loaded door featuring an inset finger pull the valve door is easy to open (fully open at 90°) and very reliable. A long life gasket provides a leak proof closure and two color matched screws are included with each inlet.
The round door universal valve also called a "standard connect inlet" or "low-volt inlet" is theCV80162.99