Yes, there is a low point drain value already in the basement. Last year he needed to access this drain while I was home to connect this hose. By installing one on the outside, will a contractor be able to accomplish the same task? How is it normally done in the Northeast?
I would like to have a drain valve (winterization blowout port) installed on the outside (there is already a drain valve and shut-off ball valve in the basement) so that I would not need to be home for them to blowout the sprinkler system. Do I have the drain valve installed outside <b>before or after</b> the PVB (backflow preventer)??? Which way is right, I've seen it done both ways? Is this drain value required for winterization? Is this a DIY project, will an irrigation company install this, ...
