Plumbing Unit Purpose Transporting liquids safely from one

Plumbing Unit

Purpose: • Transporting liquids safely from one point to another for storage, processing, and direct use • Carries fresh water from a source like a well to a fixture. • A drain waste vent carries waste water away to septic tank.

Terminology • Pipe: round/hollow RIGID material • Tubing: round/hollow FLEXIBLE material • Fitting: connecting device – Joins two piece of pipe – Connects a piece of pipe to a fixture, pump

Pipe Size • Pipe size is represented by the inside diameter • Pipe wall thickness (grade) is represented by a ‘schedule #’ - greater number represent greater strength - Ex: 40 - 60 - 80

Plastic Pipe • PVC – (polyvinyl chloride) used mainly for cold water supply, drain waste vents, or irrigation lines • What you’ll use in this class!

Pipe Fittings • Elbow fitting: changes angle/direction of pipe • Tee fitting: allow for branched lines

Pipe Fittings • Male/Female Adapters: used to change the end of a nonthreaded pipe

Pipe Fittings • Reducer: used to change diameter of pipe • Plug: close an opening that is reopened regularly • Cap: closes end of dead end pipe

PVC Pipe Tools • Hacksaw: used to cut pipe to length. – Teeth should be pointing forward – Cut forward, slight downward angle

PVC Pipe Tools • Pipe Cutter: used to cut pipe to length. – Ratchet cutting – Only use on PVC to keep blade true

Primer • Purposes: – clean surface of the pipe –purple color - easily seen by inspector –Prepares pipe surface for bonding with cement = water tight seal

Cement – Not Glue • Provides sturdy/water tight seal when combined with dried primer • Dries and sets fast! • Solvent Welding

Step 1: Primer pipe and fittings

Step 2: After primer dries, apply glue to pipe and fittings

Step 3: Quickly connect pipe to fittings. Seat all the way into fitting!

Things to avoid: • Forgetting primer • Dripping primer down pipe (excess primer) • Excess glue • NOT seating pipe all the way into socket before glue dries

Video-PVC Plumbing • Please click on this link to watch a video of applying primer and cement to PVC pipe.