This Plaster Guard does more than protect your inlet valve it detects a leak in the valve saving you time and money. Finds leaks BEFORE you seal up your vacuum pipe and system. (See the second picture to see the back of it)
For use in new construction or remodeling. Place these over the inlet
valve mounting plates. Protects the mounting plates from plasterers and
painters. Then take them off and install the valve cover plate.
