Shieldsflex II Series Marine Water and Exhaust Hose can be used on engine intakes, wet exhaust connections where bends or longer lengths are required, bilge pump intake and discharge, scupper lines, toilets, and holding tanks.
Shieldsflex II features a black synthetic rubber tube and cover. Wire is used to reinforce the hose between plies of synthetic cord. These hoses are resistant to odors, permeation, abrasion, exhaust fumes, ozone, mild chemicals, antifreeze, and saltwater.
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BRAND:
Shields
Type:
Exhaust Hose
Questions & Answers about Shieldsflex II Marine Water and Exhaust Hose:
2012-12-17DON ARCHER asked: can i purchase 2 feet of the 3 inch hose?. Thanks
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2012-12-17Kevin V: The hose only comes in 12.5' or 50' lengths.
2012-10-25DINO DISABATINO asked: what is the heat capacity of this hose? thanks, dino
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2012-10-25DAVID ANDERSON: I have no idea. But it works great for my Graymarine 100 hp
2012-09-08J SETLIFF asked: When tightening hose clamps, what is considered tight? i don't want to over tighten and premature the life expectancy of the hoses.
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2012-09-12DAVID ANDERSON: Tighten the clamps a little more than hand tight. After and hour of use, check clamps again. Check again after 10 hours of use
2012-09-12GERALD HARWOOD: First, ensure you are using high quality, marine grade hose clamps and use 2 clamps on any connection below the water line. I tighten clamp until the metal strap is imbedded in the hose outer layer. In other words, the rubber outer layer of the hose should be just raised above the top of the hose band and the adjusting screw should be firm or tight. The fitting should be barbed so if you snug it up tight, it won't come off or damage the hose.
2012-09-12DON KINNEY: Hi, JS...
Based on the strength of this hose, I don't think that you could tighten it enough with a standard clamp to injure it, I think that the clamp would break first.
To install, I just make sure that there's plenty of hose past the anti-slip rings, then install one clamp with the screw on one side of the hose facing you, then another clamp just above it with a screw on the other side, also facing you. Tighten each a little at a time until they're totally secure and tight, but stop before the screw on the clamp starts deforming the slots in the clamps...and you're good to go!
2012-09-13JULIE WAGNER: I would tighten enough that the clamp just starts to settle on the hose. Give the hose a tug and twist, if it moves on the fitting, tighten a bit more. All you are after is a seal, after that you are just stressing the hose.
2012-09-16JOHN A CALOGERO: Hose clamp manufacturers give torque figures for their products. They also recommend two clamps for wet exhaust connections.
2012-06-07GEORGE KALAN asked: How well does the Shieldsflex II marine water and exhaust hose work on marine toilet holding tank pumpout lines and how long will it provide odor free service before it needs to be replaced?
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2012-06-08THOMAS DALFONSO: I would not use this particular hose for holding tank applications. I purchased this hose raw water feeds to livewells. It would be also good for raw water cooling, etc. Trust me when I tell you, I replaced my holding tank hoses due to odor permeation and you want to do that job once. Buy the best low odor permeation sanitation hose you can afford. They are usually white. The one I bought was trident 101.
2012-06-08DON KINNEY: Hi, George...
I don't know well it will work on toilet and holding tanks, I used it on exhaust/water for the diesel in my sailboat. It's a pretty high-performance hose, though, so I'd think that it would perform as well or better than any other hose.
Sorry I couldn't give you a more specific answer.
Don Kinneyh
2012-06-08JOHN MACKAY: For head and holding tank you should use the white sanitary hose. It's easy to cut to work with.
2012-06-09ANDY SCHWINN: Hose is Oder free for the third year I've had it. Only downside is if you need to make a tight radius turn.
2012-06-09ANDY SCHWINN: I re read this and realized you asked about the exhaust hose for toilet. I would only use the green line hose for toilet. It's more money but worth it.
2012-06-10ERIC RODEGAST: use designated waste water hose. The rubber in Shieldsflex will eventually exude the sewer gasses and your bilge and next your whole boat will stink. Check out Practical Sailor waste water hose comparisons. Be careful fitting metric to inch fittings.
2011-10-11PAUL ZADEL asked: I am replacing a hose labeled "Shildsflex 2 3/8" premium water hose" on a green spiral. It is used in a wet exhaust system. Does the label refer to id or od and what would be the equivalent?
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2011-10-11DANIEL SCHINDLER: Paul,
The label should be referring to the inside diameter, or ID. When ordering the product, click on the drop-down menu and they all say "ID". To be doubly sure, take a cross section of your old hose and measure the ID. Excellent product. I used it to replace a hose that runs between my V-drive and raw water impeller. Super strong stuff, yet pliable and bendable enough. Hope that helps!
2011-10-11MICHAEL SNYDER: Paul,
The label on the hose is referencing Internal Diameter. So in this case you would be replacing it with Jamestown part # SHI-2502384.
2011-10-11MICHAEL SNYDER: In the case of measuring the wire wound hose it is best to average two measurements taken 90 degree's to each other ( + ) as the wire will deform the end of the hose. In the case of a piece of 1 7/8" hose I replaced, one measurement read an 1/8 to a 1/16th smaller and the other read larger by about the same dimension. In conventional hose a difference of 1/8" is no big deal you can force it on. With this hose 1/8" is a no go.
2011-10-12JOHN MACKAY: The size marked on the hose should be the ID of the hose.
2011-10-12ERIC RODEGAST: the main problems I found with hoses and whatever they will be connected to was that some were metric and others were inch and fractions. they can give you a fit trying to connect them, especially the heavy exhaust parts(Shields to Vetus for example) as far as I know, all hose and pipe is sized ID, although some hoses specify both ID and OD.
2011-10-12FILLMORE CRANK: Since different materials of different thicknesses are used by different manufacturers, most always the dimension is ID since that is a constant.
RE: the "green stripe": I don't beleive green stripe is USCG certified for wet exhaust . Or possibly it is just older and different manufacturer. I suppose it doesn't matter since you are replacing it with "ShieldsFlex" wet exhaust service application which I beleive is "blue stripe". The service application should be clearly labeled in or next to the stripe as well.
2011-09-28RAY A asked: What is the bend radius of the one and a half inch wire hose?
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2011-09-28DAVID BREZINA: I'm not at the boat, but it did 'collapse' a little when I tried to force it in some fairly tight radii. Off the top of my head, I'd say 6" or more is probably good. But it will also depend on the length of the arc -- a slight 6" radius bend for 15 degrees is easier than a 6" radius bend that turns through 90 degrees. I was trying to put an "S" in about a 14" length and I'd say it didn't make two 4" radii very well. Although a tight fit, the partial 'collapse' (the wall kind of flattened) wasn't a problem for a 9 hp diesel.
2011-09-28Ray A: Thanks David,
I only need a 5 or 6 inch radius in an 18 inch piece. It will be a 90 deg. bend that will start about 4 inches from one end. I think this product will work out fine for me. It is for the raw water intake for a pair of 350 HP 454 Chevys.
Thanks, Ray
2011-09-28JAMES ALBANI: Ray,
I don't know of a specific bend radius. However, as the hose is wire reinforced, it won't collapse even with a severe radius in it. I have used it with some pretty tight bends and not had any problems with it.
Jim
2011-09-28Ray A: Thanks Jim,
I only need a 5 or 6 inch radius so think this will work great for me.
Ray
2011-09-29JAMES ALBANI: Yeah Ray, you won't have any problem with that. It's stiff to bend at that radius, but that's becuase it's wire reinforced for rigidity, to keep it from collapsing.
Jim
2011-09-28GAY BOYNTON: Ray,
I couldn't tell you, but the radius is fairly large. On my installation I used one fiberglass 90 degree ell and one 45 degree ell and the installation was very clean. I have some slight bends in the hose but for anything abrubt I would recommend using an ell fitting.
- Bob
2011-09-28Ray A: I was thinking along those lines at first till I priced the 1 and a half inch fittings. I think that the six inch radius that has been mentioned by others will do me just fine.
Thanks Bob.
Ray
2011-09-29THOMAS KOEHL: I used the water hose and would estimate the bend radius at about 12 inches, although I never had need to bend it sharper than that. The box for the 50 feet of hose is about 24 x 24 x 30. -Tom
2011-09-29Ray A: Thanks Tom.
Ray
2011-09-29GARY HAMM: I used it in an engine compartment to replace some cracked hoses on my westerbeke generator, I would say it's pretty flexable with about a foot (12") radius of bend, we had no trouble bending and flexing it to install, very high quality hose and made in USA
2011-09-29Ray A: Thank you Gary.
Ray
2011-10-03DON KINNEY: Hi, Ray!
This hose is rather stiff because of the composition of the hose and the wire that's impregnated in it...I'm not sure that I can give you an answer as to the exact bend radius, but I would not try more than a 90 degree bend unless the fittings the hose goes on are more than 18 inches apart. Also, because of its stiffness, it can be difficult to get over fittings, as it doesn't have much expandibility. However, it works great once you get it in place. Hope this answers your question!
Don Kinney
2011-10-03Ray A: Thanks for the reply Don. I think it will work out OK for me. I just about to order some.
Comments about Shieldsflex II Marine Water and Exhaust Hose:
I used this product to replace an intake house on my Malibu inboard, between the V-drive and the raw water impeller. The old hose was nearly compromised as it was rubbing against the rudder assembly. But this stuff is strong, with the steel reinforcing, yet bendable enough that I was able to use a couple heavy-duty zip ties to keep the new hose from the same fate. Excellent product!
6/17/2010
5.0
Highest Quality Material
By Bear
from Ohio
About Me Avid Do-It-Yourselfer
Pros
Durable
Cons
Best Uses
Comments about Shieldsflex II Marine Water and Exhaust Hose:
The Schieldsflex II Marine Water and Exhaust hose is really a top notch product. I would put it up against any other brand for more than twice the price. Be sure to measure carefully, as there is no strech to the diameter of the tubing. Great value.
2/3/2010
(1 of 1 customers found this review helpful)
4.0
all pourpose engine hose
By Sud-Z
from Perkiomenville, PA
About Me Avid Do-It-Yourselfer
Pros
Durable
Cons
Difficult To Install
Best Uses
Comments about Shieldsflex II Marine Water and Exhaust Hose:
Good all around engine hose. Does not bend too easy.
10/6/2009
(1 of 2 customers found this review helpful)
5.0
Right stuff
By Strider 1
from Tennessee River
About Me Avid Do-It-Yourselfer
Pros
Cons
Best Uses
Comments about Shieldsflex II Marine Water and Exhaust Hose:
If you are below the water line and want to make sure you are providing maximum security, this is the intake hose you want. Good positive seal with opposing clamps, good bend radius, sturdy pro-grade hose.
8/10/2009
(1 of 1 customers found this review helpful)
4.0
Good Product
By Capt. Scully
from Howell, NJ
About Me Professional
Pros
Durable
Easy To Install
Easy To Use
Cons
Best Uses
Boat exhaust
Comments about Shieldsflex II Marine Water and Exhaust Hose:
Good product for replacement or new installation. The wire reinforced can be a little tough if the fitting is slightly bigger than the hose ID. The wire version won't stretch very much.
7/21/2009
5.0
Industry Standard
By Jess
from Annapolis, MD
About Me Casual Do-It-Yourselfer
Pros
Durable
Easy To Install
Easy To Use
Cons
Best Uses
boat
Comments about Shieldsflex II Marine Water and Exhaust Hose:
Used to replace hose that was 23 years old.
7/18/2008
(2 of 2 customers found this review helpful)
4.0
High quality hose is worth the cost
By Todd
from Eureka, CA
About Me Professional
Pros
Dependable
Durable
Long life
Rugged
Cons
none
Best Uses
Marine exhaust systems
Comments about Shieldsflex II Marine Water and Exhaust Hose:
Marine exhaust hose like the Shields brand is the real deal. Never, ever substitute ordinary rubber hose for an exhaust application. Keep the water on the outside of your boat where it belongs. Inferior parts give inferior results. Don't cheap out. This stuff is good.
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Special order items are not stocked and are ordered direct from the manufacturer. They are non-returnable, may take 2-4 weeks, price and shipping charges subject to change.
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