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5 Cards in this Set
- Front
- Back
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From returning to the source of supply |
Backflow preventer |
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system to prevent reverse flow |
Backwater valve |
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Increased reverse pressure above the supply pressure |
Backpressure backflow |
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Flowing back of used contaminated polluted |
Back siphonage |
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Flow of water in the potable supply of water other than its intended source |
Backflow |
