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Double check valve
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#	Item
71	Microsoft Word - BACKFLOW TEST REPORT FORM.DOC Add to Reading List Source URL: www.emd.saccounty.net Language: English - Date: 2012-08-28 00:46:01 Water Valves Check valve Double check valve Backflow Pressure vacuum breaker Vacuum breaker Test Plumbing Irrigation Fluid mechanics
72	Double Check Valve Assembly The Double Check Valve Assembly (DC) is commonly used to protect against low to medium hazard installations. They may be used under continuous pressure and protect against both backsiphonage a Add to Reading List Source URL: www.deq.mt.gov - Date: 2011-12-13 11:06:58
73	Water/Sewer Connection Permit City of Somersworth, New Hampshire Add to Reading List Source URL: www.somersworth.com Language: English - Date: 2014-08-27 11:18:13 Water Construction Backflow prevention device Somersworth New Hampshire Reduced pressure zone device Pressure vacuum breaker Backflow Double check valve Vacuum breaker Irrigation Plumbing Fluid mechanics
74	Microsoft Word - Document2 Add to Reading List Source URL: englewoodwater.com Language: English - Date: 2012-10-09 13:24:01 Fluid power Soft matter Hydraulics Backflow prevention device Backflow Environmental engineering Water industry Reduced pressure zone device Double check valve Plumbing Fluid mechanics Irrigation
75	LAWN (TURF) IRRIGATION SYSTEMS For the protection of the water purveyor’s distribution system, all irrigation systems must have an approved backflow prevention assembly that is commensurate with the degree of hazard. I Add to Reading List Source URL: www.src4.org Language: English - Date: 2002-11-20 14:41:55 Construction Double check valve Pressure vacuum breaker Atmospheric vacuum breaker Air gap Vacuum breaker Check valve Backflow prevention device Chemigation valve Irrigation Water Fluid mechanics
76	Cross Connections can create What is a Cross Connection? A cross connection is a point in a plumbing system where the potable water supply is connected to a non-potable source. Briefly, a cross Add to Reading List Source URL: www.src4.org Language: English - Date: 2004-02-10 14:16:04 Fluid mechanics Water Backflow prevention device Air gap Atmospheric vacuum breaker Pressure vacuum breaker Vacuum breaker Double check valve Siphon Plumbing Irrigation Construction
77	EASTERN MUNICIPAL WATER DISTRICT Add to Reading List Source URL: www.cityofperris.org Language: English - Date: 2008-05-08 21:52:17 Fluid mechanics Water Water industry Backflow prevention device Backflow Valves Double check valve Water supply network Check valve Plumbing Irrigation Construction
78	LEGEND Black text = 2011 Oregon Plumbing Specialty Code (OPSC) language. Blue text double underline = Substantive new language. Blue text strike through = Substantive deletion. Purple text underlined = Substantive new la Add to Reading List Source URL: www.cbs.state.or.us Language: English - Date: 2014-09-25 11:30:09 Water Fluid mechanics Backflow prevention device Pressure vacuum breaker Air gap Atmospheric vacuum breaker Vacuum breaker Double check valve Siphon Plumbing Construction Irrigation
79	Examples of Backflow Prevention during Mixing of Agricultural Chemicals 1. What Is Backflow? Backflow occurs when water flows opposite to its normal direction and can lead to contamination of the original water supply Add to Reading List Source URL: onfarmfoodsafety.org Language: English - Date: 2011-04-27 11:09:04 Construction Backflow prevention device Air gap Pressure vacuum breaker Backflow Vacuum breaker Double check valve Tap Atmospheric vacuum breaker Irrigation Plumbing Fluid mechanics
80	Approval of Backflow Preventers History \| Standards \| Approval Program Historical Perspective Add to Reading List Source URL: fccchr.usc.edu Language: English - Date: 2014-08-29 16:17:17 Backflow prevention device Architecture Pressure vacuum breaker Vacuum breaker Atmospheric vacuum breaker Double check valve Backflow University of Southern California Irrigation Plumbing Construction

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