Comments on: Engine Exhaust Line Valves – Are They Necessary? http://setsail.com/engine-exhaust-line-valves-are-they-necessary/ A New Paradigm for Cruising Sat, 11 Feb 2012 12:58:16 +0000 hourly 1 http://wordpress.org/?v=3.2.1 By: Steve Dashew http://setsail.com/engine-exhaust-line-valves-are-they-necessary/comment-page-1/#comment-40759 Steve Dashew Fri, 11 Nov 2011 09:11:38 +0000 http://setsail.com/?p=8901#comment-40759 Hello Anders: Plastic works as long as you don't have a dry running condition under load. Mild steel is the norm, and will last years, as long as you exercise it on a regular basis. Hello Anders:
Plastic works as long as you don’t have a dry running condition under load. Mild steel is the norm, and will last years, as long as you exercise it on a regular basis.

]]> By: Anders http://setsail.com/engine-exhaust-line-valves-are-they-necessary/comment-page-1/#comment-40724 Anders Fri, 11 Nov 2011 04:55:56 +0000 http://setsail.com/?p=8901#comment-40724 Would a regular steel valve or plastic valve be able to stand up to the corrosive exhaust gasses or are you using stainless steel valves? Would a regular steel valve or plastic valve be able to stand up to the corrosive exhaust gasses or are you using stainless steel valves?

]]> By: Steve Dashew http://setsail.com/engine-exhaust-line-valves-are-they-necessary/comment-page-1/#comment-2782 Steve Dashew Fri, 30 Oct 2009 21:04:10 +0000 http://setsail.com/?p=8901#comment-2782 Howdy Scott: The exhaust lines for engine and genset run to the deck. They also have aqualift style mufflers and external flaps. 99% of the time these will take care of any water ingress issues. The valves are in place for two situations. First, for use when the boat is in storage mode, these eliminate humidity from outside getting into the exhaust system. The second, as mentioned in the blog, if you are in heavy weather, disabled,and hanging off a para anchor or stern drogue of some sort. Howdy Scott:
The exhaust lines for engine and genset run to the deck. They also have aqualift style mufflers and external flaps. 99% of the time these will take care of any water ingress issues.

The valves are in place for two situations. First, for use when the boat is in storage mode, these eliminate humidity from outside getting into the exhaust system. The second, as mentioned in the blog, if you are in heavy weather, disabled,and hanging off a para anchor or stern drogue of some sort.

]]> By: Scott Whitfield http://setsail.com/engine-exhaust-line-valves-are-they-necessary/comment-page-1/#comment-2781 Scott Whitfield Fri, 30 Oct 2009 20:50:04 +0000 http://setsail.com/?p=8901#comment-2781 Hi Steve, Does this system also have a loop, water lock, and flapper valve? If so, do you still feel it necessary to close the valve in the situation you described? Just wondering if I should consider this on my (future) boat. Thanks! Scott Hi Steve,

Does this system also have a loop, water lock, and flapper valve? If so, do you still feel it necessary to close the valve in the situation you described?

Just wondering if I should consider this on my (future) boat.

Thanks!
Scott

]]> By: Steve Dashew http://setsail.com/engine-exhaust-line-valves-are-they-necessary/comment-page-1/#comment-2734 Steve Dashew Tue, 27 Oct 2009 17:20:29 +0000 http://setsail.com/?p=8901#comment-2734 Kevin: Launch dates are always tenuous, especially on first boats. We are expecting (hoping) to start builders trials in February. Kevin:
Launch dates are always tenuous, especially on first boats. We are expecting (hoping) to start builders trials in February.

]]> By: kevin chesley http://setsail.com/engine-exhaust-line-valves-are-they-necessary/comment-page-1/#comment-2715 kevin chesley Mon, 26 Oct 2009 20:54:38 +0000 http://setsail.com/?p=8901#comment-2715 Thanks for the answer on my dry exhaust question. What is FPB#1 launch eta date? Thanks for the answer on my dry exhaust question. What is FPB#1 launch eta date?

]]> By: Steve Dashew http://setsail.com/engine-exhaust-line-valves-are-they-necessary/comment-page-1/#comment-2709 Steve Dashew Mon, 26 Oct 2009 14:54:18 +0000 http://setsail.com/?p=8901#comment-2709 Hi Gilles: I am not familiar with these. Hi Gilles:
I am not familiar with these.

]]> By: Steve Dashew http://setsail.com/engine-exhaust-line-valves-are-they-necessary/comment-page-1/#comment-2708 Steve Dashew Mon, 26 Oct 2009 14:53:33 +0000 http://setsail.com/?p=8901#comment-2708 Hi Kevin: We have looked hard at dry exhaust systems and have discussed this in detail elsewhere. They have one advantage, getting rid of the salt water cooling pump. Offsetting this are a series of disadvantages. They are noisier and dirtier, more complex to maintain if properly insulated, and present a variety of moisture risks to the engine at rest and from condensation. Periodic replacement of the isolators, muffler, and exhaust line is a huge project. Against this impeller maintenance looks pretty simple, as long as you have good access (which we do). Hi Kevin:
We have looked hard at dry exhaust systems and have discussed this in detail elsewhere. They have one advantage, getting rid of the salt water cooling pump. Offsetting this are a series of disadvantages. They are noisier and dirtier, more complex to maintain if properly insulated, and present a variety of moisture risks to the engine at rest and from condensation. Periodic replacement of the isolators, muffler, and exhaust line is a huge project.
Against this impeller maintenance looks pretty simple, as long as you have good access (which we do).

]]> By: kevin chesley http://setsail.com/engine-exhaust-line-valves-are-they-necessary/comment-page-1/#comment-2707 kevin chesley Mon, 26 Oct 2009 14:46:38 +0000 http://setsail.com/?p=8901#comment-2707 Hi Steve, Why not go with dry exhaust? Hi Steve,
Why not go with dry exhaust?

]]> By: Gilles Philippin http://setsail.com/engine-exhaust-line-valves-are-they-necessary/comment-page-1/#comment-2706 Gilles Philippin Mon, 26 Oct 2009 11:49:13 +0000 http://setsail.com/?p=8901#comment-2706 Hi, is there a reason for not using mikalor hose clamps? They are wider, stonger and they look good too! Thanks alot, i just love your boats! Gilles. Hi, is there a reason for not using mikalor hose clamps? They are wider, stonger and they look good too!
Thanks alot, i just love your boats!
Gilles.

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