Pvc Slide Gate Valve

slide gate
A steel gate that upon opening or closing slides on its bearings in edge guide slots. A gate that can be opened or closed by sliding in supporting guides.
Generally 4, 5 or 6 feet in length. The gate is designed to slide along the edge of the mezzanine to allow access to the mezzanine. It can be opened either manually or electrical power.

valve
A cylindrical mechanism in a brass instrument that, when depressed or turned, admits air into different sections of tubing and so extends the range of available notes
device in a brass wind instrument for varying the length of the air column to alter the pitch of a tone
a structure in a hollow organ (like the heart) with a flap to insure one-way flow of fluid through it
A membranous fold in a hollow organ or tubular structure, such as a blood vessel or the digestive tract, that maintains the flow of the contents in one direction by closing in response to any pressure from reverse flow
A device for controlling the passage of fluid through a pipe or duct, esp. an automatic device allowing movement in one direction only
control consisting of a mechanical device for controlling the flow of a fluid

pvc
Polyvinyl chloride
polyvinyl chloride: a polymer of vinyl chloride used instead of rubber in electric cables
Polyvinyl chloride, (IUPAC Poly(chloroethanediyl)) commonly abbreviated PVC, is a thermoplastic polymer. It is a vinyl polymer constructed of repeating vinyl groups (ethenyls) having one of their hydrogens replaced with a chloride group.
premature ventricular contraction: irregularity of cardiac rhythm; recurrent occurrences can be a precursor of ventricular fibrillation