| Posted by hj on November 05, 2002 at 22:23:55: | |
|---|---|
| In response to Re: valve | |
|
The very least you should install is a pressure vacuum breaker. Some municipalities require that you upgrade it to a reduced pressure principal backflow preventer. : what kind of backflow preventr do i use on a residential house underground srinkler system
|
|
| Replies to this post |
| There are none. |