water main pipe with back flow prevention double block and bleed valves |
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| navigate by keyword : water main pipe back flow prevention double block bleed valves access backflow background building code check commercial connection control doublecheck drinking engineering equipment fire industrial industry irrigate line metal outdoor outdoors pipeline piping plumbing pressure prevent preventer protection residential reverse safeguard safety shut shutoff steel supply system tap valve installation potable feeding private meter |
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| Industrial installation for potable water line feeding a private line with backflow, double block and meter |
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