GLOSSARY OF PLUMBING TERMS | J

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J Bend – The trap section, with a 180-degree bend, or a multi-piece P-trap. Also called a return bend.

J Hook – A pipe hanger in the shape of a J.

Jacket – Usually refers to the heating/ cooling jacket surrounding the stuffing box on some pumps; The outer casing (shell) of a water heater.

Jackson Turbidity Unit (JTU) – A quantitative unit of turbidity originally based on the comparison of a liquid (such as water) with a suspension of a specify type of silica, using the turbidity measure in a Jackson Candle Turbidimeter.

Jet – An orifice or other feature of a toilet that is designed to direct water into the trapway quickly to start the siphon action.

Jetport – Hydro-jet dip tube, which creates turbulence in the tank.

Jehnni-bolts – Closet bolts, used to mount toilet bowls to the closet flange.

Joint – One length of pipe

Joint Runner – Collar like device that keeps molten lead in place while sealing a joint in cast iron pipe.

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Source: “Plumbing Terms” Standard Plumbing Supply. 11 Sept. 2008