The location of the assembly, service size, and hazard level of the connection determine which backflow assembly you should use. Accessibility endobj %PDF-1.6 % 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. 0000003258 00000 n <> In many jurisdictions an inspection will be required when the system is reactivated in the spring. WaterOne refers to Water District No. Make sure the pressure-vacuum breaker valve is the same size as the pipe. Later this cap will be cut off to continue installing downstream supply pipe. If the pressure vacuum breaker assembly does not have built-in unions between the shutoff valves and interior body: Measure the length of the union body not including connection hubs. ]knFfy?8hUe9l7i~p,XUo:RS(+~!eiuz0xf. The reduced pressure backflow assembly (RPBA) is designed to prevent backflow caused by backpressure or backsiphonage and may be installed on either low- or high-hazard connections. Complete Guide to Saddle Tee Installation, How to Make a DIY Garden Irrigation System, Learn How to Replace an Irrigation System's Pressure-Vacuum Breaker, Automatic Drain Valves Will Protect Your Sprinkler System, How to Turn a Lawn Sprinkler System Back on in the Spring, This Is Why Your Sprinkler System Has a Pressure Vacuum Breaker or PVB, Learn How to Troubleshoot Your Lawn Irrigation System, How to Use a Saddle Valve to Connect an Ice Maker or Humidifier, How to Replace a Main Water Shutoff Valve, Beat the Freeze: Installing a Yard Water Hydrant, How to Replace a Sprinkler Stop-and-Waste Valve. 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= Local code will determine who can test and repair the backflow prevention device. Leave both valves off on the pressure-vacuum breaker. Open the isolation valve to flush foreign material from the supply line, close the valve, and dry the adapter. Make sure to install the pressure-vacuum breaker in the right direction. vF>[uR{TT_RxQJxUyhW({`Wgd Give website feedback. 0000022423 00000 n %%EOF 0000062084 00000 n 0000043849 00000 n 0000027552 00000 n If copper pipe and fittings are used, transition to plastic after the hose bib. 5 bH( g9"LZG=T8/ jmE0kS{0:0Cg`:@&0 f`M< J$Y2 +e# endstream endobj 100 0 obj <> stream 0000067138 00000 n Again check for signs of debris. hb```f``` Y8 endstream endobj 27 0 obj <>stream Pressure Vacuum Breaker (PVB) 10 0 obj <> endobj The amount of water that may be discharged can vary from: "nuisance spitting" at the RPA relief port during water pressure fluctuations, major water discharge in the event the RPA needs repair. Planning, outreach and education, strategic, and technology projects. Hb``$WR~|@T#2S/`M. 0000059438 00000 n Careers 0000070677 00000 n 0000027894 00000 n | Website Design by Granicus - Connecting People and Government. 0000059074 00000 n If the RPBA becomes clogged by debris or is not functioning properly and needs repair, it may discharge a large volume of water. Must meet the additional requirements of 12" (inches) above the highest point of water use downstream of the backflow preventer. Mark the PVC main water line and cut it to fit the pressure-vacuum breaker valve. Copper provides no advantages beyond this point. 0000088590 00000 n If it has been lost, obtain a copy from the supplier or search for one online. Look for debris--bits of grass, grains of sand, etc. Y1OdU 4-5+Y\9"i{)/\|` ` endstream endobj 10 0 obj <>stream 445 0 obj <>stream 21 0 obj <> endobj Glue the vertical pieces straight down into the fittings. They may be used under continuous pressure and protect against both backsiphonage and backpressure conditions. hbbd``b`r~@ 0000073764 00000 n Glue the union onto the downturned supply pipe. 0000023171 00000 n When the assembly seems to be working properly again, close the isolation valve and arrange for inspection if required before putting the irrigation system back in service. Separate the second union, apply thread sealant compound to the threads, and reconnect hand tight. 0000037734 00000 n (*(%8H8c- fd9@6_IjH9(3=DR1%? 0000053022 00000 n Open the isolation valve to flush out any foreign material in the supply line. 0000001281 00000 n HlWKD ]@01$2 AKRFU\0~}hH 1"a+?0]Yc`a,* / When backflow happens, a properly functioning RBPA may release some water. )U!$5X3/9 ($5j%V*'&*r" (,!!0b;C2( I8/ Aaron's articles about plumbing on The Spruce span four years. endstream endobj startxref You can call the local building code office to find out if it is required, but even if it is not required in your area, it is a good idea to install one. <>/ExtGState<>/ColorSpace<>>> HW]w}lo6v|,}X wAH(rpq| }_K. 0000046179 00000 n When cutting the PVC risers,leave them a little longer than necessary, since you can always cut them shorter later. Find information about cooling centers and resources and other impacted City services: https://www.portland.gov/united. 0000000976 00000 n If you have questions about which type of assembly you need,contact the Water Bureau Water Quality Inspection staff at 503-823-7480. Even if the PBVA has a freeze protection relief valve, the system must be completely drained. 48 0 obj <>stream HVK$))01g(3_L!O/RI6a;0uiX9s[IwF7I&IlrN?mTbk29o*%:ZjD>D trailer <<3AB35F66DF12423282EFCD7EBE5C96DD>]/Prev 122813>> startxref 0 %%EOF 37 0 obj <>stream Following the manufactures instructions, test the assembly for leaks, then schedule an inspection if required. Use a level to help ensure that the risers are positioned exactly plumb. Check with local authorities before replacing the entire assembly. Upon installation this should be put in a safe place. Check for leaks at the joints before backfilling the work area. Building, transportation, maintenance, and sewer projects. $+5%RTi9Nm]Dz}V8(qJ@q` e@A 6pz.^-ZT&}vY/[2Av%Evul2di~x,Ka:KmVgNV;XOv>X]r=)L8YzXE\ezQ,p0qS,M&oG'!~H'vS7 0000185042 00000 n 0000062184 00000 n This assembly is intended to protect the potable water supply from: This assembly uses a mainline reduced pressure backflow assembly equipped with two resilient seated indicating shutoff valves, a bypass arrangement containing a smaller reduced pressure backflow assembly, and water meter. 0000067169 00000 n 0000053709 00000 n o %PDF-1.7 % 93 0 obj <>/Filter/FlateDecode/ID[<7AE0DFDE13A1402595D5AA6DFFE8ED83><5CDA56E377D55F4E94EB904632BB30E0>]/Index[68 42]/Info 67 0 R/Length 117/Prev 209538/Root 69 0 R/Size 110/Type/XRef/W[1 3 1]>>stream 0 95 0 obj <> endobj 138 0 obj <>/Filter/FlateDecode/ID[(J\007\036C8\013xB\203 \033\246\023\323\332g) (R]\243\247\242\254\007D\274"\336\023\222\307\004h)]/Index[95 44]/Info 91 0 R/Length 95/Prev 103999/Root 96 0 R/Size 139/Type/XRef/W[1 3 1]>> stream Pressure-vacuum breaker installation can be easy, especially if you have a PVC main water line. If any is found, rinse parts, reassemble, and test. Dsda/8]5Dr###c`Y. TaKOkkjs8.]`$9=?e]'#bPu2/UKFrfp%^_Y? %PDF-1.5 % endstream endobj 69 0 obj <> endobj 70 0 obj <> endobj 71 0 obj <>stream If you have plenty of room to work with, the installation should be easy. %%EOF hb```f``e`e`fb@ ! e1pz'mt\A.M_ymV'&&Ri#U&jGLx]8P, ,MBJJiAFA (IZFLLPII (W1iW ACy'z46 |g~ ,Av5,vLa@S\rx%FuMk70oQxa C`WKZ8/`CC9 e6CQ72L`wG}4/@*~,p 8w endstream endobj 74 0 obj<> endobj 75 0 obj<> endobj 76 0 obj<> endobj 77 0 obj<>/ColorSpace<>/Font<>/ProcSet[/PDF/Text/ImageB/ImageC]/Properties<>/ExtGState<>>> endobj 78 0 obj<>stream <> Test results must be recorded on. [F"QVLDOmNXGT;5&FZ&k?#&W;@->'c$#c6#?rYZs8A* 0000166195 00000 n In the event there is a conflict between WaterOne's requirements and municipal plumbing codes, the more stringent requirement will prevail. osnA`` !|F | hTR=o +nlqH&K~Ic8'j39: z{8fn pc!W:;-v b/TU&qx8|gFCnzA;yE8_c0GJJYhT dU=ZPHRkBzE5R2u6,lIgvi 96ld~B$+[&%7PpQr4\FqL. 0000054294 00000 n 0000033285 00000 n 391 0 obj <> endobj Cqv1Xpl%3,QC~:?[>27C 8Bc u6{Wn7:gZk"W8'4 xdtN=$cM0.zuFTu%@"($O~p_7MeLq'{(0KdkJ1PQ? %PDF-1.4 % Using pipe sealant compound, tighten the adapter into the outlet shutoff valve on the assembly. Downsizing the pipe with a smaller valve can cause some water volume problems throughout the sprinkler system, as the water flow becomes restricted by the smaller pipe size. Partially open the isolation valve and then partially open the inlet shutoff valve to flush any debris from the line. 0000028283 00000 n 0000166670 00000 n 2M0%r j};+I0yeqU^awpnPU$?YR%Yd "1mMr%0Lobk-#94Du8?Of$S|?qS,7#U?9,lR:#K|LbIEY R![0 eFD Learn more about different backflow prevention assemblies. Apply plumber's tape to the adapters and screw them into the pressure-vacuumvalve. 0000078414 00000 n xb`````We`c`z @1v+wZ[1`` }bGGH endstream endobj 11 0 obj <> endobj 12 0 obj <>/Font<>/ProcSet[/PDF/Text]>>/Rotate 0/Type/Page>> endobj 13 0 obj <>stream 503-823-4000 Traduccin e Interpretacin |Bin Dch v Thng Dch | | |Turjumaad iyo Fasiraad| | Traducere i interpretariat |Chiaku me Awewen Kapas | . 15 0 obj hbbd```b`` 14 0 obj 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. If you do not have a shut-off valve here, it might be a good idea to install one now. endstream endobj 28 0 obj <>stream Make life easier by using colorful glue, so you can tell at a glance which joints have glue and which do not.. BPA must be installed per WaterOne requirements for Cross Connection Control. Glue a long riser into the elbow. 0000163596 00000 n It must be noted, though, that once the entire original pressure vacuum breaker assembly is discarded, any grandfather protection is probably lost. 18 0 obj 6PXH8aMm]"epq!F5M7! The double check detector assembly (DCDA) protects the potable water supply line from possible contamination or pollution from: The assembly consists of two spring-loaded check valves, a bypass assembly with a water meter and double check valve assembly, and two resilient seated indicating shutoff valves. A properly functioning RPBA will periodically release small amounts of water due to changes in line pressure up or downstream of the assembly. The DCVA may be installed in a vault below finished grade. endobj WaterOne is an independent public utility proudly serving the Johnson County area since 1957. Tighten an FIP hose bib onto the riser using thread sealant compound. 0000012595 00000 n This installation can be done using copper pipe and fittings if the homeowner has the soldering equipment and skill. To install a pressure-vacuum breaker, you should need only about 12to 18 inches of space. 0000002703 00000 n 0000058187 00000 n When filling pools, keep the end of the hose out of the pool and have a gap between the end of the hose and the surface of the water. Hj`@ Apply pipe sealant compound to the male adapter threads, then connect the inlet shutoff valve on the pressure vacuum breaker assembly to the riser so that the inlet is at the bottom and the bonnet is at the top. Install with a minimum of 6 inch clearance in all directions around the assembly. 0000043059 00000 n 0000067365 00000 n 0000001173 00000 n Allow the joints to dry for the amount of time noted on the glue that you used. The valve needs to be at least 12 inches higher than the highest outlet, as measured from the center of the middle ball valve. Glue an elbow onto one end, and then glue the other end into the outlet adapter so that the elbow is pointed downward. 0000058692 00000 n For this reason, this type of assembly should be installed in areas that are not subject to water damage and have proper drainage. 3lgC YtcL&(&( @S)V_ zs.*_H+j)Q|w jTw{Wi#bPn|ll[ZCVK =suqxa?rgi!P.G 0sacvM8Lwq/w*doi-U7UV_.8YJU 1Z~rk(D? endobj Measure the length of the small piece of pipe that will go between the pressure-vacuum breaker and the outlet 90-degree elbow. In a relatively flat landscape, this is likely to be at the top of a shrub watering riser or sprinkler head. Otherwise, PVC installed as described above is legal and adequate in most jurisdictions. lM:,NK8#yN{Qc Aaron Stickley is a licensed plumber with 15 years of experience in commercial, new residential plumbing, and residential service and repair. If water stands in the riser, loosen the union to drain, then retighten. The Water Bureau doesn't allow either the AVB or PVBA to be used for backflow protection. 0000007740 00000 n To clear debris, remove the bonnet screw, the bonnet assembly, and the poppet assembly. 0 It works by breaking back-suction on the lines should water pressure fall, thereby preventing contamination from being drawn back into the water supply. 0000165465 00000 n 0000012859 00000 n %PDF-1.6 % 0000046569 00000 n &0 8^T3H9`k7_\ S!qU9,/^t\u-X{>?gMG|S.Gl7ulyYh +QTc( *b.rR\X'c\r564q`Lk\1c5m]TnSAq(Wg%(vQAd&! 0000054010 00000 n 0000061436 00000 n Kelly Bacon is a licensed general contractor with over 40 years of experience in construction, home building and remodeling, and commercial building. The double check valve assembly (DCVA) is commonly used to protect against backflow hazards that do not pose a health risk. Before opening the pressure vacuum breaker assembly, close the isolation valve, the outlet shutoff valve, and the inlet shutoff valve in that order. 109 0 obj <>stream 0000022862 00000 n 0000054690 00000 n 0000029525 00000 n Articles, blogs, press releases, public notices, and newsletters. 0000061982 00000 n 21 0 obj 0 Inspect each part for visible damage and replace as necessary. 0000002395 00000 n 0000053434 00000 n HT; @)JV[LM?bc2I006[;,XpXdjmpeOUQe>m9G,sPm2o#yO550L.Bh=Iv^d9/e203Iwb=?B7vl'*~"_h)SQ8c1S$%NFXf2 \!dRG paT#)=j\3k.P(qfv!IF"e&LR' &P?lckXF,U{|w5m% .g]s [cy3y#bh;L,6 uT4J^RQ*U;qf,wB+3}a3yqnL~Pskzpio{md 2 All Rights Reserved. Site Map, 2022 WaterOne. 0000008595 00000 n ]bqi"w8=8YWf8}3aK txg^+v!a{Bhk 5YliFeT?}YV-xBmN(}H)&,# o0 M-UbTWE]Z\DR*$spbtl endstream <> SprinklerWarehouse.com has all the necessary parts in stock. Assemblies 2 1/2"and larger 4 34 0000005399 00000 n P)o@TrY.8[`U_(In9gX1_U[iIoI!uU?2M?^(REsU5#6sm0jO[9^OFMF_t,iOj^T>a 0000002961 00000 n [Cq-KkW\99!`[+t_p3gjkWTnH3\$la$hse63.BirJQs1E`O5iY%om-VJQs206*`cD For example, if a hose is submerged in the pool, the chlorinated pool water may enter the drinking water system during a backflow condition. Turn off the water. Backflow assemblies most commonly installed on residential irrigation systems arethe double check valve assembly (DCVA) and the pressure vacuum breaker assembly (PVBA). endstream endobj 97 0 obj <> endobj 98 0 obj <> stream Glue a short length of pipe, about four inches, into the second Slip X MIP adapter. Make sure everything is aligned properly and then wrench tighten the union connectors. Cut the riser again four inches from the top, insert the union between the two pieces and glue it into place. 8;U<19lJ`N&;KZOMERj%!Un6A'+#hY8ZV"#%lJ4m`a0jb?n=Ypjkn\9bVj2GXG5?` Then reconnect, test for leaks, and call for inspection. IitBg{F t&&b8LN^O^ 20 0 obj 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. Have a plan before cutting the existing pipe for the installation. BPA must be inspected for compliance with installation criteria including correct orientation. <> 0000002261 00000 n HTM0W4;BJnl8 3,K>~syiqt mB/j5jl8~-_.y\BXup6Rqs3HF(LJs -ZK;tam^6:t`j{C[HSMo7m1?^;IUtvPxBtcQ}%K Get daily tips and tricks for making your best home. endstream endobj 26 0 obj <>stream This hose bib will be necessary to drain the system for winterization or repair. 39 0 obj <>/Filter/FlateDecode/ID[<198A59F6FD12BEFDD4779FDE16644E9B>]/Index[21 28]/Info 20 0 R/Length 94/Prev 95662/Root 22 0 R/Size 49/Type/XRef/W[1 3 1]>>stream
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