Before installing the pressure vacuum breaker assembly, run the supply pipe to the location of the assembly in accordance with the site plan and, if necessary, use an elbow to turn the supply line vertical and upward. TaKOkkjs8.]`$9=?e]'#bPu2/UKFrfp%^_Y? 0000002961 00000 n
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If the riser isn't tall enough, extend it with a coupling. 48 0 obj
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Then remove the assembly cover. 0000059438 00000 n
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Glue the inlet adapter onto the riser working quickly to avoid damaging internal parts. 0000002354 00000 n
If pressure vacuum breaker assemblies have been proscribed locally since it was installed, it may have to be replaced with a new double check valve assembly or reduced pressure assembly. 0000043059 00000 n
Usually, you want the pressure-vacuum breaker fittingto be located close to the sprinkler valves and right after a stop-and-waste valve, especially if you live in a colder climate. The RPDA must be installed at least 12 inches above finished grade or the 100-year flood plain, whichever is greater. % 0000070714 00000 n
Cut the riser on the third mark. "@$biSjd2`L> The PVBA must be installed at least 12 inches above finished grade. H\j0~ 0000040482 00000 n
[Cq-KkW\99!`[+t_p3gjkWTnH3\$la$hse63.BirJQs1E`O5iY%om-VJQs206*`cD Prime and glue the PVC 90-degree elbowsonto the pipe in the ground first, with the pipe risers. 0000001736 00000 n
Your plumber or licensed backflow assembly testing companywill likely know which type of assembly to use. Aaron Stickley is a licensed plumber with 15 years of experience in commercial, new residential plumbing, and residential service and repair. Make sure everything is aligned properly and then wrench tighten the union connectors. Request these services online or call 503-823-4000, Relay Service:711. 5 bH( g9"LZG=T8/ jmE0kS{0:0Cg`:@&0 f`M< J$Y2 +e#
WaterOne refers to Water District No. Measure the length of the small piece of pipe that will go between the pressure-vacuum breaker and the outlet 90-degree elbow. 0000009690 00000 n
ehOPJ.eEMNj D8-cr=1v. Free viewers are required for some of the attached documents.They can be downloaded by clicking on the icons below. Find information about cooling centers and resources and other impacted City services: https://www.portland.gov/united. HVK$))01g(3_L!O/RI6a;0uiX9s[IwF7I&IlrN?mTbk29o*%:ZjD>D Careers
In most cases, if the homeowner is allowed to test and repair, an inspection by a state-certified blowout prevention inspector will be required before the unit is put back into service. He is a member of The Spruce Home Improvement Review Board. M-UbTWE]Z\DR*$spbtl
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WaterOne is an independent public utility proudly serving the Johnson County area since 1957. Cut and glue the pipe and 90-degree elbow to the pressure-vacuum breaker adapter. 14 0 obj He started his own residential service and repair plumbing business. Turn the main sprinkler valve on slowly, then turn on the pressure-vacuum breaker, one valve at a time, unlessinstructed otherwise by the manufacturer. 0000166670 00000 n
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&0 8^T3H9`k7_\ Allow to cool. During normal operation, the pressure between the two check valves, referred to as the zone of reduced pressure, is maintained at a lower pressure than the supply pressure. For this reason, this type of assembly should be installed in areas that are not subject to water damage and have proper drainage. HTn0+ %|X^z!1K"ER ,1- `~NpwYkC]s;Cu3&o~OY4qqvI7-xj?P-ccu+J
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Otherwise, PVC installed as described above is legal and adequate in most jurisdictions. Cut the riser again four inches from the top, insert the union between the two pieces and glue it into place. The irrigation system site plan will indicate the location of the pressure vacuum breaker assembly. We've updated our Privacy Policy, which will go in to effect on September 1, 2022. shut down the irrigation system for the winter, Lengths of PVC pipe of diameter matching the current pipes. %PDF-1.4
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Glue the vertical pieces straight down into the fittings. 0000030633 00000 n
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It should be as close as possible to the isolation valve and within a few inches of a trench leading to the zone control valves. Following the manufactures instructions, test the assembly for leaks, then schedule an inspection if required. IitBg{F t&&b8LN^O^ P)o@TrY.8[`U_(In9gX1_U[iIoI!uU?2M?^(REsU5#6sm0jO[9^OFMF_t,iOj^T>a endstream
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Check on your neighbors during this state of emergency for extreme heat. Every five years all non-metallic internal components should be replaced. 503-823-4000 Traduccin e Interpretacin |Bin Dch v Thng Dch | | |Turjumaad iyo Fasiraad| | Traducere i interpretariat |Chiaku me Awewen Kapas | . }w Find the highest outlet on the system. 0000029012 00000 n
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Measure, cut, and glue a length of pipe long enough to extend from the elbow to three inches above the bottom of the trench. 0000022143 00000 n
[F"QVLDOmNXGT;5&FZ&k?#&W;@->'c$#c6#?rYZs8A* Place a third mark on the riser at the bottom of the pressure vacuum breaker assembly inlet valve. duk~"b9gX}zP18/Ew=/-rc4R^(~K)
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Even if the PBVA has a freeze protection relief valve, the system must be completely drained. 0000165465 00000 n
You can call the local building code office to find out if it is required, but even if it is not required in your area, it is a good idea to install one. ]bqi"w8=8YWf8}3aK
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5YliFeT?}YV-xBmN(}H)&,# o0 Must meet the additional requirements of 12" (inches) above the highest point of water use downstream of the backflow preventer. 0000031855 00000 n
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Leave both valves off on the pressure-vacuum breaker. Measure and install the unions. 0000022423 00000 n
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Articles, blogs, press releases, public notices, and newsletters. endstream
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stream Municipal plumbing codes have been modified to include a maximum installation height for BPA without providing special access to the BPA for testing and repair. The valve needs to be at least 12 inches higher than the highest outlet, as measured from the center of the middle ball valve. 0000053022 00000 n
The DCVA may be installed in a vault below finished grade. Assemblies 2 and smaller
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This riser will be cut to the correct height in the next step. Test results must be recorded on. 0000002261 00000 n
Install with a minimum of 6 inch clearance in all directions around the assembly. O69r>jmE$&rG]9"jnJ#h4lf8g+,56ekL9%PjflphLET%lrLpifD`2dZFpuQ>o#&ZH Glue the union onto the downturned supply pipe. A reduced pressure assembly (RPA) is designed to discharge water. q3X22QSQm\b9f#(X |jeVEQTl9dFNr3=,1u\e@8\ ;l[^X|},zw@el!V|Pyl?k2I-{H0~'>iAXyu{Z|w?uBam;9AK%Z=QfkbaO1T#}h9@GPV=>[Wb>;= {iI=
Open the isolation valve to flush out any foreign material in the supply line. 0000166781 00000 n
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On the pressure vacuum breaker assembly riser, measure up twelve inches and place a second mark. 0000163596 00000 n
Whenever a BPA is installed that could create a closed water system, a solution for thermal expansion needs to be considered. 0000059074 00000 n
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See something we could improve onthis page? s9Mbjl H It works by breaking back-suction on the lines should water pressure fall, thereby preventing contamination from being drawn back into the water supply. )U!$5X3/9 ($5j%V*'&*r" (,!!0b;C2( I8/ It's required by most cities because it prevents contamination of the potable water supply. endstream
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6PXH8aMm]"epq!F5M7! Use a towel to wick water down if necessary so that the top few inches are empty and dry. 0000002703 00000 n
The PVBA is an outgrowth of the AVB and evolved out of a need to have an atmospheric vacuum breaker that was testable and could be used under constant pressure. 0000011210 00000 n
Downsizing the pipe with a smaller valve can cause some water volume problems throughout the sprinkler system, as the water flow becomes restricted by the smaller pipe size. Y1OdU 4-5+Y\9"i{)/\|` `
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Cut on the fourth mark to achieve minimum installation height. hb``g``a```01$Ay(f`Peg`c0`(JpEbd|l=yC)
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T{%}Zi`V?pp4?32g`$YHiy]2H6qc.I&2 If you have plenty of room to work with, the installation should be easy. e1pz'mt\A.M_ymV'&&Ri#U&jGLx]8P, ,MBJJiAFA (IZFLLPII (W1iW ACy'z46 |g~ ,Av5,vLa@S\rx%FuMk70oQxa
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22 0 obj Water meters, as part of detector assemblies, shall read in gallons per minute (GPM). %%EOF
In a relatively flat landscape, this is likely to be at the top of a shrub watering riser or sprinkler head. This vacuum-breaker installation configuration will help drain the line when you shut down the irrigation system for the winter.. 0000022862 00000 n
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Glue another four-inch pipe into the elbow. If it has been lost, obtain a copy from the supplier or search for one online. Building, transportation, maintenance, and sewer projects. They canbe installed above or below ground, but no more than 24 inches deep or five feet above the floor or grade. endstream
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This installation can be done using copper pipe and fittings if the homeowner has the soldering equipment and skill. <> Using pipe sealant compound, tighten PVC Slip X MIP adapters into the inlet and outlet shutoff valves on the assembly. One common cause of pressure vacuum breaker malfunction is debris in the system, particularly the poppet or check assembly. 0000038005 00000 n
There should be a flow arrow on the breaker. Measure and cut the lengths of pipe necessary to install the vacuum breaker at the correct height. Installing a vacuum breaker yourself can save you money on the cost of installation. 0000002620 00000 n
Planning, outreach and education, strategic, and technology projects. Copyright 2010 IrrigationRepair.com - All Rights Reserved, Pressure Vacuum Breaker Assembly: Installation. hbbd```b`` 0
<> The AVB is among the simplest and least expensive mechanical types of backflow prevention device that the end user can buy. Copper provides no advantages beyond this point. Separate the union, apply thread sealant compound, and tighten with a wrench. "+$&$Ir+ 6%`5D0
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Close the isolation valve, and dry the end of the pipe.