Reinforced hose for raw water cooling

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Pagetslady

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Hi I am almost finished installing my new Beta marine 35 heat exchanger cooled engine, I am having trouble buying wire reinforced 25mm hose longer than in 1 Mtr lengths I need a little over 1Mtr for seacock to filter, filter to Pump and from Exhaust to syphon break and back to the Heat exchanger. I need the wire reinforced to prevent the hose closing up around bends. Please any suggestions would help.
Mike
 
Spiral wire reinforced hose from seacock, filter, pump: thereafter a normal hose will be wholly acceptable. Nylon reinforced or, radiator hose.
 
Be careful. I have just finished installing a Beta 25 and the water hose from the exhaust is slightly bigger than the water hose from the sea cock
 
Pagetslady said:
Hi I am almost finished installing my new Beta marine 35 heat exchanger cooled engine, I am having trouble buying wire reinforced 25mm hose longer than in 1 Mtr lengths I need a little over 1Mtr for seacock to filter, filter to Pump and from Exhaust to syphon break and back to the Heat exchanger. I need the wire reinforced to prevent the hose closing up around bends. Please any suggestions would help.
Mike
Click to expand...

Just re read your post, are you sure you mean exhaust to syphon break and back to heat exchanger ???
 
Pagetslady said:
Hi I am almost finished installing my new Beta marine 35 heat exchanger cooled engine, I am having trouble buying wire reinforced 25mm hose longer than in 1 Mtr lengths I need a little over 1Mtr for seacock to filter, filter to Pump and from Exhaust to syphon break and back to the Heat exchanger. I need the wire reinforced to prevent the hose closing up around bends. Please any suggestions would help.
Mike
Click to expand...

Are you sure that you need 25mm hose? I thought all Beta engines up to around 38 hp had 22mm connections to pump, heat exchanger and exhaust elbow, but my memory might be at fault there.
FWIIW, my installation uses pre-formed silicone bends and epdm hose, all readily available from ebay etc.
For 22mm hose, couplings can be made with easily available 22mm copper tube.
 
prv said:
Well, the water will flow in the other direction, but the hose runs both ways :)

Pete
Click to expand...

Surely the syphon valve is on the high pressure side of the seawater cooling i.e between the sea water outlet from the engine and the exhaust elbow. whereas the fresh hot water side simply circulates around the calorifier and engine.

I think the internal bore of the seawater side is something like 18mm and the hose to the exhaust elbow is something like 22mm. Whatever it is one is bigger than the other. At least it is on my 25hp Beta.
 
Mavis said:
Surely the syphon valve is on the high pressure side of the seawater cooling i.e between the sea water outlet from the engine and the exhaust elbow. whereas the fresh hot water side simply circulates around the calorifier and engine.
Click to expand...

Who said anything about the freshwater side? I don't know the Beta engine, but I assumed this hose was taking the seawater out of the heat-exchanger (having done its job cooling the freshwater), through the anti-siphon valve, and then down to the exhaust elbow to be mixed with the gases and expelled from the boat. The OP named the components in the opposite order, but as I jokingly said, the hose runs both ways.

If you take the heat exchanger to be part of the engine, this is exactly the same route as what you state in the quote above. If you consider "the engine" to mean only the block, not including the heat exchanger, then what on earth is "the sea water outlet from the engine" on a freshwater-cooled unit? :)

Pete
 
The 25 mm as you all have pointed out leaves the Heat exchanger goes to my 25 mm syphon break and into the exhaust bend. Beta recommend a 1 inch sea-cock so i have fitted a 25 mm water strainer you correctly say the raw water pump is 22 mm or even 19 mm but its a it is a pain as the pipe has to be reduced, So what I is some reinforced hose 25 mm its a bit like the Calorifier connections they are different sizes, I am sure they have a very good reason for this but still a nuisance when I bought the fittings to change the direction they leave the engine.
Mavis said:
Surely the syphon valve is on the high pressure side of the seawater cooling i.e between the sea water outlet from the engine and the exhaust elbow. whereas the fresh hot water side simply circulates around the calorifier and engine.

I think the internal bore of the seawater side is something like 18mm and the hose to the exhaust elbow is something like 22mm. Whatever it is one is bigger than the other. At least it is on my 25hp Beta.
Click to expand...
 
Yea sorry, I read It wrong In the post. No one mentioned the hot water side, my mistake. Anyway. The point is the two pipes are of a different size on the 25hp and I wanted to save someone a wasted journey or delivery.
Pete.
 
Thanks everybody for your help, I have found a supply of exactly what i want locally will take delivery today its exactly the same hose that Beta fit on as standard with out a syphon break there's is only 12 inches long though. If anybody wants any of this hose Lancaster Rubber will have some next week when I have had what i want from their roll. Its metal reinforced 25 mm and will bend through 180 deg in a very tight bend without collapsing. it is smooth bore inside.
Regards Mike
 
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