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U.S.: 1-800-414-BOAT
Intl.: 724-745-9311 |
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A Critical Component on Boats and Other Vessels |
Consider “Marine Hose” to include all flexible hose, tubing, ducting, conduit, exhaust, connecters, etc; installed on boats and other vessels. Marine Hose connects, services and protects almost critical equipment and systems on the boat. It conveys its fluids, vapors and gases; and protects its wiring, cables, etc. Essentially, only the integrity of the boat’s hull has a more encompassing effect on its operation and safety. In fact marine hose often connects to holes in the hull, and acting as an extension of the hull into the boat, it should have the same integrity.
The failure of marine hose on a boat can have catastrophic effects; like explosion, fire, flooding, sinking, asphyxiation, etc. Although we seldom hear about such high profile tragedies, hose failures could be the root cause of malfunctions on boats that just disappear. More routinely, we hear of boats being Disabled, which can be caused by the failure of marine hose connecting critical equipment and systems. The results can be far worse than inconvenience, whether it’s off shore or near shore. Unfavorable winds and sea conditions can easily drive a disabled boat onto the rocks, shoals, reefs, etc; or they can sweep a boat off shore (say into the Gulf Stream with its 4 knot northerly flow). During my years in the US Coast Guard as a search and rescue pilot, I witnessed many disabled boat incidents that turned into tragedies; and there is no way of knowing if a hose failure was the root cause. For example, the internal delamination of a marine fuel or water hose can be the root cause of an engine failure.
Therefore, at Trident we take the subject of Marine Hose and the long term job it must perform, very serious. We do everything practicable to ensure that Trident Marine Hose is not complicit in equipment and system failures on boats. We design, build and supply only the “highest quality” marine hose; that delivers the “best long term performance, durability and reliability; with the greatest standard conformance, certifications and consistency; year after year”. Let this be our definition of “highest quality marine hose”.
All of our marine hose is guaranteed, and our signature hoses (for the most critical applications) are guaranteed for 5 to 10 years. These have an expected service life of 10 to 20 years. Considering the low cost of the best marine hose compared to the high cost of the equipment it serves and protects; our hose is the best insurance deal we can imagine. Considering the small difference in cost, and the great difference in robust quality between the best marine hose and the least; our hose is the best deal based on value. Trident offers the best and highest value marine hose available.
Trident Rubber Inc.
|
 Wet Exhaust Hoses, Connectors, Bellows & Elbows |
Marine Wet Exhaust
Systems are generally a combination of flexible
rubber exhaust hose, bellows
and elbows; sometimes fiberglass
or stainless steel pipe (at least for connectors);
and mufflers and/or silencers. The benefits
of wet exhaust vs dry exhaust are significant,
but they must be properly designed, installed,inspected
and maintained for good performance and
safety. Engine flooding (even to the point
of sinking the boat) can occur if it's poorly
designed or rigged. Exhaust leaks can cause
dangerous carbon monoxide poisoning and
flooding (also to the point of sinking).
Extra high temperatures, caused by loss
of cooling water (due to an obstructed raw
water strainer [plastic bag, etc.], a failed
raw water pump, or hose) can damage the
exhaust system, even to the point of a fire.
Therefore we recommend
using good product, judgment and compliance
with all appropriate standards.
1. ABYC P-I (6/4/93) "Installation
of Exhaust Systems For Propulsion and Auxiliary
Engines."
2. NMMA Certification Handbook - Exhaust
System Standard (identical to A.B. Y. C.)
'1
3. SAE J2006 Marine Exhaust Hose Standard
SAE 12006 has been adopted
into both the ABYC
and NMMA Exhaust Standards, and
the NMMA is now inspecting for Exhaust Hose
and Flexible Connectors compliance and labeling
for boat and yacht certification. In order
for flexible Exhaust Hose, Bellows and Elbows
to comply with this standard, they are required
to pass a number of performance tests, including
an aggressive high heat test (1100°F.
for 2 minutes at 4900 Cu. Ft./min. air flow).
That simulates running the engine at full
power for 2 minutes with no cooling water.
If they pass all testing, they are then
required to be labeled: "Wet Exhaust
- SAE J2006," manufacturer's name or
trademark and year made. If they are not so
labeled, they don't meet the standard, and
the boat may not pass a marine survey or
be NMMA certified.
Flexible Marine Wet Exhaust
Hose, bellows and elbows are easier to install
and run than rigid pipe. They're not subject
to corrosion or stress cracking, and they
absorb more engine movement, vibration and noise.
They should at least meet the SAE J2006
standard. They should be flexible, constructed
with a heavy wall, and formulated properly
to resist heat, cold, abrasion, ozone, aging,
etc.. 100% EPDM is the best hi-temp black
rubber and it will with stand 250 F. Max.
continuous. 100% Silicone with polyester reinforcement and molded Siliconel EPDM
Blend will withstand 350 degrees F. max.
continuous. Both constructions are colored
Blue. 100% Silicone will withstand up to
500°F. max. continuous (molded or reinforced
with Nomex). Both constructions are colored
Lava Red.
Additionally, 100% Silicone
exhaust will last up to 6 times longer than
black rubber. They cost more, but they're
worth the price. Hard Wall Wet Exhaust Hose
(SAE 12006 R2) is built with a wire helix
and textile reinforcement (preferably 2
plies with the wire between them). It is
used for long runs and for bends, and should
beflexible and kink resistant. Soft Wall
Wet Exhaust Hose (SAE 12006 R) is reinforced
with multiple textile plies, and is used
for short, straight connections. Flexible
Wet Exhaust Connectors (SAE 12006 R3) as
Elbows and Hump Hose Bellows may be molded
or hand built with textile reinforcement
plies. They provide the maximum compensation
for engine movement, vibration, noise and
misalignment.
Flexible elbows also
accommodate the tightest bends, and compared
to rigid elbows, they cause less back pressure
due to their smooth interior bend. Molded
bellows and 900 elbows are available in
"step up" sizes (3" to 4", etc.) which can reduce back
pressure and increase engine performance.
Overall they all provide easier and better
installations with less parts, labor and
cost.
Learn more about these:
 Elbows
& Bellows Trident
Wet Exhaust
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