This assembly details the supply piping for a pre-rinse faucet, featuring one-half inch hot water and one-half inch cold water lines routed within the wall. The supply lines extend from the ceiling, where an access panel is required for valving. Vacuum breakers, specifically Watts LF008PCQT in chrome finish, are required on both supply lines if the hose length allows the spray head to extend below the flood level rim of the sink bowl. Check valves may be omitted if the faucet assembly includes integral check stops.
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