A: no a back flow allows water to flow in one direction. be careful not to in stall it in backwards.
A: As a building inspector I have to advise you that you must follow your jurisdiction's building codes. Our code requires a whole house backflow preventer to be located on the main street line at the house before any diversions are attached. Well owners are required to have the same protection. This would prevent any contamination to the utility or main source. It also requires all faucets outside to have hose back flow preventers. Likewise all underground irrigation must have backflow protection. Any irrigation injection system must have additional pressure regulation and backflow preventer. The code also requires ports for testing the system. Home Depot sells a brass backflow preventer and any store plumbing specialist would be able to lead you in the right direction. You can also go online to find this item.
A: The manufacturer advised that these valves are excellent for under sink or anywhere else (outside the wall) up to 145psi.
A: Yes they are designed for that use ! The clerk probably doesn't know what end of a hammer to use, let alone the application of this or any valve .
|Brand||John Guest||John Guest||Everbilt||JONES STEPHENS|
|Name||3/8 in. O.D. x 3/8 in. O.D. NPTF Polypropylene Push-to-Connect Valve Fitting||1/4 in. O.D. x 1/4 in. MIP NPTF Polypropylene Push-to-Connect Valve Fitting||3/8 in. OD Compression Brass Valve Fitting||PlumBite 1/2 in. Push On x 3/8 in. O.D. Compression Chrome Plated Brass Quarter-Turn Straight Supply Stop Valve|
|Connection||PTC||PTC||Comp||PTC x Comp|
|Inlet Diameter (In.)||3/8||1/4||3/8||1/2|
|Outlet Diameter (In.)||3/8||1/4||3/8||3/8|
|Compatible Pipe Material||Multi-Purpose||Multi-Purpose||Multi-Purpose||Multi-Purpose|
|Maximum Working Temperature (F)||140||140||160||180|
|Valve Inlet Diameter (in.)||3/8||1/4||3/8||1/2|
|Maximum Pressure (psi)||150||150||400||200 PSI|
|Application||Air,Oil,Potable Water||Air,Oil,Potable Water||Air,Oil,Potable Water||Potable Water,Water Supply|
|View Product||View Product||View Product||View Product|