In Reply to: 8-N hydro question posted by Bigtom1960 on August 06, 2017 at 12:39:59:
As stated it's a test port, But can also be used for other thing. I have used mine for 711 one arm loader and hyd lift snowplow. It's pressure up and gravity down. Use black pipe not galvanized. Chain down arms or there are other hold down options.