Quote from: KeelsonGraham on September 12, 2023, 12:46:26 PM
Looks completely different from CD's 'riser'
KG,
That's because it is. And that is also why what we have on our boats is called a riser, and not an elbow. Yanmars have elbows. Universals on our boats have risers. Yeah, westerbeke makes both but we don't have westerbekes.
Elbows get clogged because they have small apertures inside the elbow where the water turns 180 degrees.
Risers rarely get clogged, indeed in my 25 years I've never heard of a clogged riser. Why? Because it's just two big pipes coming together. Where they fail is at the nipple where the hot gas and water meet; the weld fails or one pipe fails usually there.