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Department of Environment & Conservation - Gander Clean Water ShowPresenters: Jeff B. Jensen & John Palmer – Mueller CanadaMarch 27th, 2019
FIRE HYDRANT MAINTENANCE BEST PRACTICE
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FOREWORD• AWWA Manual M17 @ ACWWA.CA• AWWA C502 standard • Canada Valve Darling troubleshooting manual 1002-
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ANNUAL INSPECTION
• 2 x per year
• Check for damaged exterior parts
• Remove caps, clean, grease all – replace
• Flush Hydrant
• Use listening device for leaks while in open
• Close, repeat step
• Remove cap, inspect drainage
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THIS IS NOT THE TIME FOR HYDRANT MAINTENANCE
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PREVENTATIVE MAINTENANCE – CONFUSED?
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KNOW YOUR HYDRANTS – HAVE TOOLS
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DRY TOP OPERATION ASSEMBLY
• Operating assembly uses grease or oil
• Bearing lubricated each operation exercise
• One piece op nut / thrust collar per C502
• O-ring sealed
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TRAFFIC FEATURE
• Bury line 3-4” above
• Breakaway FlangeBreakable Cast Traffic Flange
vsStrong Ductile Extension Flange
• Breakaway CouplingBreakable Cast or SS Coupling
vsStrong Ductile or solid SS
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HYDRANT MAIN VALVE
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• Main Valve Disc ‘ball’ –EPDM or SBR rubber
• Bronze Main Valve Seat resist corrosion
• Bronze Drain Ring for easy removal of main valve and self drain
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DRY BARREL COMPRESSIONTYPE HYDRANT
• Moves vertically on a stem
• Seats against the hydrant base
• 5 ¼” or 4 ½” diameter main valve
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THANK YOU FOLKS FOR KEEPING YOUR HYDRANTS OPERABLE
QUESTIONS?
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