|
|
|
|
|
|
by tuatoru
1476 days ago
|
|
|
A lot of domestic water meters have a simple backflow prevention valve built in. Though most of them are not easily testable like the commercial connection backflow prevention valves. If the property has non-potable water as well as potable water under pressure, then one or more commercial grade BPVs are necessary. |
|
|