An automatic flue damper is an energy-saving device that closes off or restricts an appliance flue when the appliance is not operating...

Chimneys should extend at least 2 feet higher than any portion of a building within 10 feet, but not less than 3 feet above the highest...

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Flexible (semi-rigid) appliance fuel connectors are typically used with cooking ranges and clothes dryers where the gas connection is...

Each piece of equipment and appliance should be provided with a shut-off valve which is separate from the appliance to permit...

Most fuel-gas appliance manufacturers require the installation of a sediment trap. Sediment traps prevent debris from entering the gas...

Tanks should be listed and labeled, and conform to standards for underground and above-ground tanks. The maximum amount of fuel oil...

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Piping should be supported to ensure alignment and to prevent sagging. Piping in the ground should be laid on a proper bed. Piping...

Individual, branch and circuit vents are permitted to terminate with a connection to an individual or branch-type air-admittance valve. ...

A common vent is one vent that serves more than one fixture, functioning as an individual vent for each fixture. Wet venting is venting...

Where the drainage system cannot drain by gravity to the sewer, an automatic pump or ejector can be used to discharge the soil and waste....

All cleanouts should be accessible or reachable without having to remove a permanent portion of the structure. Cleanouts are designed to...

Modern plumbing, including proper sanitary drainage, is one of the reasons that diseases such as typhoid fever, cholera and dysentery...

Ball valves are less restrictive to flow than other valves. The handle clearly indicates whether the valve is open or closed. Ball...

Globe valves tend to be restrictive, but can be used to control water flow. Gate valves are meant to be fully open or closed. Since the...