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There are 6 entries in the glossary.| Pages: 1 |
| Main | The primary artery of supply of the water supply or drain system in which all the branches connect. In the case of drains, known as the Main Vent. |
| Male Threads | Threads on the outside of pipes and fittings. |
| Malleable Fittings | Fittings made of metal which is soft and pliable. |
| Manifold | A fitting that connects a number of branches to the main; serves as a distribution point. |
| Mechanicals | The wiring, plumbing and heating and cooling systems in a building; also the components with moving parts such as furnaces, plumbing fixtures, etc. |
| Multi-Stage Pump | A pump that has more than one impeller. |
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