Three-dimensional drawing that shows the layout, sizes and dimension of the piping system of a structure.
Piping or tubing, copper
Tubing or piping either thin Type M, medium Type L and heavy wall Type K, which can be either rigid, called Drawn Temperature Pipe or flexible, called Annealed Tubing, all of which is made from copper alloy. The outside diameters range from 1Ú4 inch to 12 inches with connections made of compression fittings, solder joints and flare fittings with threaded joints normally used for piping.
Piping schematic
Schematic drawing, which shows the routing of the piping system of a structure, without showing the piping lengths or giving dimensions.
Piping, pvc
Polyvinyl chloride, a lightweight, resilient, chemical resistant, strong and durable thermoplastics, with an long lifespan, made into piping which is often used for cold water systems and where chemicals are found. There is bell and spigot pipe, with a bell on one end, which has an internal elastomer seal to hold the lubricated plain end of the next piece of pipe, by making a fluid-tight joint. Solvent cement joint pipe joins the ends by applying a primer to soften the surface of the material, with the solvent cement being applied to the pipe end and the inside of the fitting end, then inserting the pipe into the fitting using a twisting motion to spread the solvent cement. The cement cures rapidly and the joints fuse together.
Pistil
The seed-bearing organ of a flower, consisting of the ovary, stigma, and style.
Pistol grip screwdriver
Pistol grip screwdrivers look more like a standard power drill. These models offer both comfort and greater leverage for driving screws, assembly work and small home repair jobs.
Piston
Solid cylinder within a cylinder pumping and compressing fluid as it moves back and forth.
Piston ring
Spring steel ring that provides a seal against the cylinder wall when it is fit around the outside of a piston.
Piston rod
Rod that has bearings at each end and connects the piston to the crankshaft to transfer power.
Pit
(1) A hole or cavity in the ground. (2) A hollow or depression on a surface. (3) An area below floor level or ground level.
