Double check valve backflow prevention assembly for assemblies 3 thru 10 pdf. Plumbing codes mandate that potable water supplies be protected against backflow at all crossconnections. With the changeover to lead free in the united states effective january 4, 2014, lead free backflow prevention devices are required in many applications andor settings. Zurn wilkins provides the complete line of backflow prevention products for fire protection, irrigation, plumbing, retrofit, and waterworks projects. It is the standard for commercial irrigation installations. Standard details for water savannah, ga official website. Backflow prevention policies cleveland water department. Reduced pressure principle backflow prevention assembly for assemblies 3 thru 10 pdf. New york state department of health application for approval of bureau of public water supply protection backflow prevention devices print or type all entries except signatures please. Zurn provides industry leading backflow prevention products. Fire sprinkler system back flow preventer 7114 714 edited title, backflow preventer in building, updated notes fire sprinkler system back flow preventer 7114 714a newsection drawing of 714 hydrant location within planting area 7114 716 removed meter location and moved to 703c valve box detail. For the education of ohio certified backflow prevention. Unit is the king of the backflow preventers, made for highhazard uses. Guidelines for designing backflow prevention assembly.
Febcos backflow prevention assemblies, which prevent the backward. Thank you for your patience and willingness to do your part to help our city meet its state regulatory obligations. Several types of backflow preventers are available and are approved for use in west virginia. Crossconnection and backflow prevention manual dhhr. Reduced pressure zone valve installation instructions. Backflow prevention assembly testing manual testing techniques 2 approved type check valves used in backflow assemblies are required by design specifications to have a mechanical closing load of at.
Water details sewer details general design details green infrastructure utility protection guidelines. Backflow preventers and protection of water supply. The purpose of the cross connection program is to protect the city of arlington water supply system by eliminating potential sources of contamination resulting from illegal cross connections and backflow. The state requires all water utilities to complete an inventory survey of all properties in their territory to be sure every location which requires backflow prevention. Autocad details dwg and dxf formatted cad detail files available for free viewing and downloading. A charlotte water approved and certified tester must test the device upon installation and annually thereafter. Federal and state regulations require public potable water supplies to adopt rules to prevent contamination in their water systems. Pressure zone rpz backflow prevention device must be installed 12 inches above the 100year flood plain.
Backflow prevention devices prevent the unwanted reversal of flow from an end users water system back into the public water supply. Double check valve backflow prevention assembly for assemblies 34 thru 2 12 pdf. Zurn industries llc cad backflow preventers arcat free architectural cad drawings, blocks and details for download in dwg and pdf formats for use with autocad and other 2d and 3d design software. Individual drawings are provided in both pdf and dwg file. This product guide includes information on watts complete line of backflow prevention. Backflow is defined as the reverse flow of contaminated or undesirable substance into the potable water supply. Plumbing codes mandate that potable water supplies be protected against backflow. Backflow is the undesirable reversal of the flow of a possible source. Backflow prevention products guide watts water technologies. Repairs to a backflow prevention assembly on a dedicated. Cws 01 air vent blowoff valve and box pdf cws 02 leak detector pdf cws 03 small valve box for mains up to 6 inches pdf.
When the backflow prevention device is installed, call charlotte water at 7043915188 to request an inspection. Backflow prevention assemblies bpas shall conform to clt. However, for information on listed approved backflow assemblies, contact backflow prevention at 6025342140. Backflow applications 757 osy lead free backflow prevention has critical implications in potable water supply systems. Lead free transition with the changeover to lead free in the united states that became effective january 4, 2014, lead free backflow prevention devices are required in certain applications andor settings. Domestic water distribution sample drawings autocad details. Installing a backflow preventer can protect the water supply from this very. Submit mechanical drawing showing the size, model, and location of the backflow prevention devices for both fire and domestic services, as. Residential meter with backflow preventer for reclaimed water areas.
The zurn industries llc cad details below are complete drawings that can easily be downloaded, customized for your residential or commercial. A backflow device is a precautionary device approved by the state office of drinking water and the university of. A crossconnection is an actual or potential link between the potable water supply water safe for human consumption and a nonpotable source any. Standard detail drawings 2300 series water information.
Clearances all double check valve dcv and reduced pressure zone rpz backflow prevention assemblies are designed for inline service and must be installed to prevent. Febcos backflow prevention assemblies, which prevent the backward flow of contaminated water into the potable water supply, are reliable and easily serviced. Planning and development backflow prevention program. The flow of water into the body causes the float to rise and close the air inlet port. Bfp installation detail 34 inch through 2 inches pdf registered backflow preventer testing companies eff. To comply with these mandates, the san marcos city council has adopted an ordinance, the cross connection control and backflow prevention. Appendix gbackfow prevention design guidance documents. Zurn industries llc cad details backflow preventers zurn industries llc backflow preventers cad details the zurn industries llc cad details below are complete drawings that can easily be downloaded, customized for your residential or commercial project, and included in your cad library for future use. W09 res water meter wo backflow preventer within concrete. Will the area where the backflow preventer is located be adequately heated to prevent freezing. Residential backflow protection program mwc has adopted a program to assist singlefamily residential customers with the annual testing and maintenance requirements for backflow prevention assemblies. Backflow preventers the risks to drinking water quality from backflow contamination incidents pose a constant threatwhether theyre nuisance, nonhealth hazards, or serious public health events. These devices, which are commonly installed immediately downstream of water meters by water suppliers, are not approved backflow prevention. Backflow prevention assembly 300ar 300ar zurn wilkins custom fits a grooved spool between the backflow body and downstream shutoff valve to match the length of your end of life, high cost to repair backflow preventer.
Backflow prevention assemblies shall be repaired, overhauled or replaced promptly at the expense of the owner of the property whenever they are found to be defective. W10 res water meter w backflow preventer within grass or landscape areas. The watts selexit configurator is an online tool designed to help designers and owners size, configure, and select products faster than ever before. Wr01 19mm through 50mm 34 through 2 reduced pressure backflow prevention device 08032018 wr02 75mm 3 and larger reduced pressure backflow prevention. This manual should be used in conjunction with reference texts that provide more detail, such as the. Hardened stainless steel operating stem and onepiece valve plunger to control both flow and drain. They are intended to be used as a guide in the preparation and submittal of plans for private development.
Reduced pressure zone valve installation instructions model rpz 212 10 flomatic corporation. 2353, reduced pressure principle backflow prevention. Installing a backflow preventer can protect the water supply from this very serious type of situation. Contact the city of flagstaff s wastewaterbackflow division for details james boyer 928. Dual checkvalve backflow preventers installed on the water supply system shall comply with asse 1024 or csa b64. The technical aspects of common cross connection control and backflow prevention devices.
336 701 520 244 72 492 1419 1402 1148 1375 1340 1424 1281 527 405 372 1082 844 741 1433 548 269 425 726 833 1288 1121 919 629 111 1131 787 710 1281 1300 1 719 771 546 1364 760