Hose material and construction?

[bluedragon]

Want to get some lengths of hose for the spares locker before setting-off this summer. Priority in terms of importance a) engine water intake strainer to water pump b) sink drain to skin fitting. The heads and hoses were replaced two years ago so should be OK. Engine intake hose seems to be car heater type (reinforced rubber) and the sink hose is wire wound PVC by the look of it. I do have on board fabric reinforced PVC water tank hose. If it fits, this may be OK in case of emergency even for engine intake, but it raised the question in my mind about choice of hose construction and material for the typical applications on board boat? Haven't been able to find any clear guidance on this, or whether I have the correct type anyway (37 yr old boat so all have been retrofitted numerous times by previous owners).

 

[tillergirl]

Some self amalgamating tape is pretty useful emergency stuff for hose repair.

 

[2Tizwoz]

Clear pvc lets you see whats going on inside the hose. Very hot water may be a problem however.

Suction hose needs to be reinforced to prevent collapse, pressure or drain hose is more likely to stay round if its reinforced.

 

[andy_wilson]

The wire wound PVC is primarily for higher pressure (or vacuum) resistance either side of a pump - bilge or toilet.

Fabric reinforced PVC is most common for manual water supply and waste.

Fabric reinforced rubber is the norm for delivering cooling water to and adjacent to the engine. However, consider the fire resistance in the case of an engine space fire. If the seacock access is in the engine compartment if should be fire resistant (or wrapped in suitable defence material). If seacock access is outside the engine space then this is less of an issue, as long as access is not so close or awkward that you may not want to turn off the seacock if the engine space is alight and billowing smoke.

 

[Graham_Wright]

[ QUOTE ]
The wire wound PVC is primarily for higher pressure (or vacuum) resistance either side of a pump - bilge or toilet.

[/ QUOTE ]

The Plastimo wire reinforced hose (potable water) bends to ridiculously tight radii;- Ø38 100mm rad!

 

[bluedragon]

Thanks to all...most helpful.