Backflow Prevention

CAD Drawings

Preview and download 3D and 2D CAD files in a variety of industry formats including Revit, stp, dwg, jpeg, pdf, etc.


Download all available Watts CAD drawings in one file by clicking links below or, download specific drawings by clicking a series name from the list below.

Note: Bundled files require .zip software to open.


Below is a list of all Backflow Prevention products with available CAD Drawings. Please click the series name for a list of all available drawings.

Series Size Description 3D CAD
0071/2 to 2 in. (15 to 50mm)Double Check Valve Assemblies
007DCDA2 1/2 to 3 in. (65 to 80mm) Double Check Detector Assemblies
0091/4 to 2 in. (8 to 50mm)Reduced Pressure Zone Assemblies
709DCDA3 to 10 in. (80 to 250mm)Double Check Detector Assemblies, Cast Iron
7191/2 to 2 in. (15 to 50mm)Double Check Valve Assemblies, Bronze
757, 757N2 1/2 to 10 in. (65 to 250mm) Double Check Valve Assemblies, Stainless Steel
757DCDA, 757NDCDA2 1/2 to 10 in. (65 to 250mm)Double Check Detector Assemblies, Stainless Steel
7742 1/2 to 12 in. (65 to 300mm)Double Check Valve Assemblies, Stainless Steel
774DCDA2 1/2 to 12 in. (65 to 300mm)Double Check Detector Assemblies, Stainless Steel
800M4FR1/2 to 2 in. (15 to 50mm)Freeze Resistant Pressure Vacuum Breakers
800M4QT1/2 to 2 in. (15 to 50mm)Anti-Siphon Pressure Vacuum Breakers
909RPDA2 1/2 to 10 in. (65 to 250mm)Reduced Pressure Detector Assemblies, Cast Iron
9191/4 to 2 in. (5 to 50mm)Reduced Pressure Zone Assemblies, Bronze
957, 957N, 957Z2 1/2 to 10 in. (65 to 250mm)Reduced Pressure Zone Assemblies, Stainless Steel
957RPDA, 957NRPDA, 957ZRPDA2 1/2 to 10 in. (65 to 250mm)Reduced Pressure Detector Assemblies, Stainless Steel
9942 1/2 to 10 in. (65 to 250mm)Reduced Pressure Zone Assemblies, Stainless Steel
994RPDA2 1/2 to 6 in. (65 to 150mm)Reduced Pressure Detector Assemblies, Stainless Steel
9BD1/4 and 3/8 in. (6 and 10mm)Dual Check Vacuum Breakers for Vending Machine Water Supply Lines
9D1/2 and 3/4 in. (15 and 20mm)Dual Check Valves with Intermediate Atmospheric Vent
Air GapsVarious sizes/modelsFor Reduced Pressure Zone Assemblies
LF0071/2 to 3 in. (15 to 80mm)Lead Free* Double Check Valve Assemblies
LF008PCQT3/8 to 1 in. (10 to 25mm)Lead Free* Anti-Siphon, Spill-Resistant Vacuum Breakers
LF0091/4 to 3 in. (8 to 80mm)Lead Free* Reduced Pressure Zone Assemblies
LF2891/2 to 3/4 in. (15 to 20mm)Lead Free* Spill Resistant Atmospheric Vacuum Breakers
LF73/8 in. (10mm) and 1 1/4 in. (32mm)Lead Free* Bronze Dual Check Valves
LF7092 1/2 to 10 in. (65 to 250mm)Lead Free* Double Check Valve Assemblies, Cast Iron
LF7191/2 to 2 in. (15 to 50mm)Lead Free* Double Check Valve Assemblies, cast copper silicon alloy
LF7R1/2 to 1 in. (15 to 25mm)Lead Free* Brass Dual Check Valves
LF800M4FR1/2 to 2 in. (15 to 50mm)Lead Free* Freeze Resistant Pressure Vacuum Breakers
LF800M4QT1/2 to 2 in. (15 to 25mm)Lead Free* Anti-Siphon Pressure Vacuum Breakers
LF9093/4 to 2 in. (20 to 50mm)Lead Free* Reduced Pressure Zone Assemblies, Bronze
LF9092 1/2 to 10 in. (65, 250mm)Lead Free* Reduced Pressure Zone Assemblies, Cast Iron
LF9191/2 to 2 in. (15 to 50mm)Lead Free* Reduced Pressure Zone Assemblies, Bronze
LF957RPDA, LF957NRPDA, LF957ZRPDA2 1/2 to 10 in. (65 to 250mm)Lead Free* Reduced Pressure Detector Assemblies
LFN9, LFN9C1/4 to 3/8 in. (8 to 10mm)Lead Free* Dual Check Vacuum Breakers
LFU0091/2 to 2 in. (15 to 50mm)Lead Free* Reduced Pressure Zone Assemblies with Swivel Union Connections
SD-21/4 and 3/8 in. (8 and 10mm)Dual Check Valves for Carbonated Beverage Machines
SD-31/4 and 3/8 in. (8 and 10mm)Dual Check Valves with Atmospheric Port & Strainer for Carbonated Beverage Machines
SS0071/2 to 1 in. (15 to 25mm)Stainless Steel Double Check Valve Assemblies
SS0091/4 to 1 in. (8 to 25mm)Stainless Steel Reduced Pressure Zone Assemblies
U0091/2 to 2 in. (15 to 50mm)Reduced Pressure Zone Assemblies with Swivel Union Connections

Disclaimer: Watts product dimensions in U.S. customary units and metric are approximate and are provided for reference only. For precise measurements, please contact Watts Technical Service. Watts reserves the right to change or modify product design, construction, specifications, or materials without prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.

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