Vacuum Breaker
An anti-siphon device that prevents the backflow of contaminated water into the water supply system.
Vent
A pipe that allows air into a drain system to balance the air pressure.
Valve
Valve is equipment designed to stop or regulate flow of any fluid (liquid, gas, condensate, stem, slurry etc.) in its path.
Waste Arm
A drain pipe that is used to extend a sink drain into a wall.
Waste & overflow
Used for bathtubs to drain overflowing water and to release water when the tub is draining.
Wye fitting
A fitting with three openings, a wye is used to create branch lines.
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