VETUS explains the wet exhaust system used on boats: often hidden but crucial for your safety

Which parts does your yachts exhaust system need? How do they all work together?

00:00 Intruction wet exhaust system
00:30 Tasks of a wet boat exhaust, protect crew and engine
02:00 Operating modes wet exhaust system
03:00 Main parts : waterlock
00:00 optional parts: anti syphoning valve, gooseneck, exhaust temperature alarm
00:00 Hydrolock risk
00:00 Mixer / Swirler
00:00 Gooseneck
00:00 Wet exhaust hose
00:00 Why plastic waterlocks don't melt
00:00 Why is stainless steel a poor choice for a waterlock material?
00:00 Anti syphoning valve
00:00 Sizing a waterlock

[hansboersma]

Marvelous presentation of this often misunderstood subject. You cleared-up some of my misconceptions. Thanks.

[jamesstrom]

great info. you won a customer. well presented.

[stephenscott]

New subscriber and I want to say you are now one of my favorite channels as I’m a newer captain coming from large center consoles to med size diesel vessels! Keep up the great videos! Thank you!

[paulgillard]

Excellent presentation very informative. Thanks

[johnpotter]

The saltwater pump on a marine diesel is almost always an impeller pump, whose rubber vanes make a good seal against the metallic pump body. Unless the impeller blades are damaged, it would seem that there should be no path for seawater to pass a stationary impeller pump to flood the exhaust. Yet I have experienced a brand new engine suffer exactly this problem. Can you explain how this can happen?

[petermackay]

Could you please talk about winterizing the water muffler. i presume there is a drain that needs to be emptied.

[The_don]

Can I use the wet exhaust hose for radiator hose? Thanks

[markrant]

i never hear of "Glow Plugs" being used in marine deisel engines. I have contacted a few narrowboat owners in England and they don't seem to be knowledgable of these plugs. In Canada they appear on all deisel engines due to our winters. Am I missing something or do these plugs just don't exist in marine engines?

[terrypannett]

Good morning . I have a Waterjet powerboat 21 feet Aluminium that I am building . To be powered by a Mercruiser 3.0 TDi . Exhaust riser outlet is 102mm. I have a new Vetus DEMPMP 90mm Inlet x 90mm Outlet, which I was going to run underfloor. I was going to run this direct to the transom with minimal down angle to the transom and fit a Vetus 90mm TRCVP with integral Non-Return Valve. I have very limited room. From the engine Riser to the Transom is 835mm, with the exhaust needing to be underfloor for 60cm directly from the engine riser. The Riser is significantly higher than the waterline, approximately 60cm to top of the riser elbow bend. Can you please advise if this is suitable. The transom outlet would be underwater with the muffler draining to the transom. **??Or should it be different in this case??** Your help would be much appreciated.

[ssss-dfqz]

Why is the system designed as such to create all these problems in the first place?

Why not dump cooling seperate to exhaust??? Crazyness.

[kapow]

Vetus/Maxwell making the rest of the marine providers look like amateurs.

[johnpotter]

The saltwater pump on a marine diesel is almost always an impeller pump, whose rubber vanes make a good seal against the metallic pump body. Unless the impeller blades are damaged, it would seem that there should be no path for seawater to pass a stationary impeller pump to flood the exhaust. Yet I have experienced a brand new engine suffer exactly this problem. Can you explain how this can happen?