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

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...

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

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...

In the connection of a water distribution system to water-heating appliances, there is the potential for the migration of heated water...

The minimum static pressure at the dwelling entrance for either public or private water service (as determined by the local water...

Condensate drains from air conditioner coils, condensing furnaces, and heat-recovery ventilators should not drain directly into a DWV...

There are deep wells (more than 25 feet deep) and shallow wells (25 feet or less). A typical well pump can pull up about 25 feet of...

A water heater tank should be installed inside a pan in locations in a dwelling where a leak from the tank could cause damage to the...

Hot water boilers should be provided with expansion tanks. There are two types of expansion tanks designated for use with a residential...

The following are 13 requirements for a discharge pipe serving a TPR valve: 1) the pipe should not be directly connected to the drainage...

Temperature and pressure-relief (TPR) valves are safety devices installed on water heating appliances, such as boilers and domestic water...