[PSUBS-MAILIST] exhaust shut off valve

[Brent Shaw <drydivenz@yahoo.com>]

I'm looking for a source for reasonably priced high
temperature ball valves or check valves

Basically I want to be able to drive my boat along on
the surface under diesel power, turn the engine off,
close the valve and dive under electric power with no
water going back up the exhaust and killing the
engine. From exhaust manifold to hull is 450mm

Any suggestion

Thanks
Brent - nz



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