Plumbing glossary: O
It always feels great adding fresh words to your vocabulary, which is why we publish a brand new plumbing glossary every week.
This week, it’s time to learn some O-words.
O-Ring – round rubber washer used to create a watertight seal
OD – Outside Diameter – the diameter of a pipe measured from the outside edge
Oakum – loosely woven hemp rope that has been treated with oil or another waterproofing agent, which is used to caulk joints
Oil powered – a water heater that uses oil for its fuel source
Operating cost – the cost of running a water heater for a given time period
Orbital weld – a circumferential, full fusion weld used to join together two lengths of tubing
Organic matter – plant and animal substance created by living organisms
Outlet – the opening through which water exits the pump
Overflow tube – the vertical tube inside a toilet tank that directs water into the bowl in case the ballcock malfunctions
Ozone – an unstable form of oxygen, which can be generated by an electrical discharge through air or regular oxygen – it is a strong oxidising agent and has been used in water conditioning as a disinfectant