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Chuckface
Unregistered
The only industry standard backflow preventer you can install in a basement is a Duel Check Backflow assymbly (not to be confused with a simple double check valve, a DC Assy has the test cocks to "prove" each part of the device is working correctly). However, a DCA is considered the lowest level of protection, and some localities do not allow a DCA as a backflow preventer to an irrigation system.
Sorry HooKoDoku, but you are the one that is a little confused. A Duel Check valve (DuC) is the simple, non testable device. The Double Check Valve (DCVA) is a testable backflow prevention assembly.
And if you are going to use short form names in brackets, use the correct short form name and identify which is which. You also might want to get your information correct. The Duel Check is the lowest form of backflow protection, not the Double Check.
The best thing that the OP should do is to contact his/her municipality of Water District for the list of acceptiable devices or assemblies. In some areas a Pressure Vacuum Breaker (PVB) is not an acceptable for of backflow protection because it doesn't protect against back pressure, only back siphonage, and it has to be installed at the proper height.
Mick
The only industry standard backflow preventer you can install in a basement is a Duel Check Backflow assymbly (not to be confused with a simple double check valve, a DC Assy has the test cocks to "prove" each part of the device is working correctly). However, a DCA is considered the lowest level of protection, and some localities do not allow a DCA as a backflow preventer to an irrigation system.
Sorry HooKoDoku, but you are the one that is a little confused. A Duel Check valve (DuC) is the simple, non testable device. The Double Check Valve (DCVA) is a testable backflow prevention assembly.
And if you are going to use short form names in brackets, use the correct short form name and identify which is which. You also might want to get your information correct. The Duel Check is the lowest form of backflow protection, not the Double Check.
The best thing that the OP should do is to contact his/her municipality of Water District for the list of acceptiable devices or assemblies. In some areas a Pressure Vacuum Breaker (PVB) is not an acceptable for of backflow protection because it doesn't protect against back pressure, only back siphonage, and it has to be installed at the proper height.
Mick
Im in Virginia.
Thanks for your help - I was planning on getting a reduced pressure valve for the backflow. Thats a good point about running to the spigot - i do need a larger pipe. Could you go from a 1/2 to 3/4 pipe? would that work? sorry for all the newb questions!
But from a practical standpoint, the general public equates the two devices and the two terms.
So pointing out the wrong use of the word "dual" verses "double" is meaningless unless you EMPHASIZE the TEST COCKS (which I ALWAYS DO when posting here about back flow prevention).