I don't know what brand of black tank flusher came with my trailer from the factory, but I'm wondering if excessive water pressure is a concern when using it. Naturally, I would not use the same pressure regulator or hose that is used for fresh water, but I just wondered if the plumbing for the flush system would stand up okay to unregulated pressure.
2013 Surveyor SP220
2010 Silverado LT 5.3 V8
The world is a great book, of which those who never stir from home
read only a page. - St. Augustine