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 Hose bib sprinkler system main line back flow prevention, hints from a home inspectorHose bib sprinkler system main line back flow prevention devices not located not installed damaged : back flow prevention devices are required in many areas and in some eras of construction. The device may be a sophisticated heavy device installed on commercial property or it may be as simple as an anti-back flow hose-bib attachment or a lawn sprinkler anti-siphon valve. Some faucets have built-in anti-siphon devices. It may be at or incorporated with the water meter. Contact the local water authority for further information. The inspector will enter this item if it is noted that an anti-back flow device is not installed or if the installed device has been altered or damaged. An expansion tank may be required, and is highly recommended, in the cold water supply line feeding the water heater after any back flow prevention devices to prevent excessive pressures and component failures in the water system. Where private and municipal water exist together on the same property and anti-back flow device should be present. Some areas and water districts will report that back flow prevention devices are part of their water meter units. While this may be true in some cases, not all are so equipped. It is recommended that you contact a qualified plumbing contractor for additional information and corrections or installations. Water main shut-off regulator leaking missing handle Faucet valve damaged spout loose handle missing Fixture faucet or valve plumbed in reverse hot on cold side Faucet valve leaks around handle spout connector pipes Sewer drain line damaged leaks improper Trap drain vent cap plug damaged leaking missing sewer clean-out may be buried slightly below the surface of the ground. new sewer clean-out on an older building may be an indicator of past or present sewer problems. Sump
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