SearchAsk us anythingarrow rightCan a reduced pressure backflow preventer be installed vertically?In a vertical arrangement, the reduced pressure principle backflow preventers don't work.Let's Get It Fixed!Our virtual experts can diagnose your issue (for free!) and resolve simple problems.Chat with a live expertChat nowCall 1 (855) 466-3948Call nowRATESHARECopy linkTwitterLinkedinFacebookmagnifying glassLink copied to clipboard.SUBMIT AN ANSWERShop Recommended ProductsShop HomeX Recommended ProductsRELATED QUESTIONSCan I install my own backflow preventer?17. As homeowner, can I install my return preventer? Yes, however, it is always necessary to get a return permit before doing the job.Can pressure relief valves be mounted horizontally?An unvertical orientation cannot provide adequate drainage for the valve. A safety valve mounted on an unvertical orientation cannot function as expected with seat sealing, operating pressure and valve adjustment may be affected.Can a pressure relief valve be installed upside down?It's best to mount pressure relief valves (PRVs) in a vertical position, which means it should be upright and the spindle should be vertical. While you can mount it facing upside down, this is not recommended.Can a pressure relief valve be mounted horizontally?A non-vertical orientation may not provide adequate drainage for the valve. A safety valve mounted on a non-vertical orientation may not work as expected with sealing seal, valve operation and adjustment pressure may be affected.Can I install backflow preventer?In order to ensure adequate protection of water supply, flow valves can be installed outside and above the level. In order to protect the devices themselves, protective shells are used.