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Flush caps - what happens if you leave them off while underway?

anmut

Jetboaters Admiral
Messages
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Boat Make
Yamaha
Year
2020
Boat Model
212S
Boat Length
21
Has anyone accidentally left the hose flush caps off on their boat while underway? Does water exit from that area? If they do, could you invent a nozzle that would give you roosters at speed?
 
I find mine off occasionally, I think there is a check valve in there to prevent back flow but mine will leak a little,

I'm not sure what the pressure would be on that water since it would have to do a 90 turn at the Y fitting,

.
 
Nothing - there is spring loaded anti-back flow valve. You open the valve with the hose fitting; you need to rotate it to lock the fitting in place (and hold the valve open). Periodically, my cap vibrates loose or off on the water.
 
Nothing - there is spring loaded anti-back flow valve. You open the valve with the hose fitting; you need to rotate it to lock the fitting in place (and hold the valve open). Periodically, my cap vibrates loose or off on the water.

Ahh - so if someone used a fitting to pop on there, it would throw some spray... interesting.
 
As Scott noted, the various plumbing turns would probably cut the flow down considerably. Also, you would be reducing flow to the engine's cooling system.

My guess is that redirecting the pisser water would do a better job of whatever it is that you are trying to accomplish.
 
As Scott noted, the various plumbing turns would probably cut the flow down considerably. Also, you would be reducing flow to the engine's cooling system.

My guess is that redirecting the pisser water would do a better job of whatever it is that you are trying to accomplish.

High pressure squirt guns for passenger while underway. Doesn't seem like a good idea now though...
 
If they are old like mine, once in a while the spring seal is not perfect so there is some high pressure mist that may come from it. It's fun on the boat because who likes to see water pouring inside the boat? so guests in particular can become overly alarmed at the situation.
 
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