| 11. | Examples are garden hose faucets, cable television wires and vent pipes through walls and roofs.
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| 12. | Numerous vent pipes and chimneys have been swept off roofs by the heavy snow, Dolan said.
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| 13. | Waste material and wood shavings compost in the tanks and the vent pipe to reduce odours.
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| 14. | The vent pipes are normally installed with PVC pipe versus metal vent pipe to prevent corrosion.
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| 15. | The smoke from the stick should be drawn up under the hood into the vent pipe.
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| 16. | The exhaust gases escape through the same vent pipe used to supply air to the fire.
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| 17. | _the vent pipes connecting to one of these drains is partially clogged and needs clearing out.
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| 18. | The vent pipes are normally installed with PVC pipe versus metal vent pipe to prevent corrosion.
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| 19. | In some cases solar-powered fans are added giving a constant outwards flow from the vent pipe.
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| 20. | Most include lockable doors, ventilation near the top, and a vent pipe for the holding tank.
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