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Hi Brian, Not a silly idea but
means constantly carrying around a lot of oil as my VBT’s are fairly large. 2
x 60 litrs. I pulled the one on my Comsub apart and it looked OK inside but it
aint designed for salt water. I contacted the agents for Danfoss and still
waiting. Chs, Hugh From:
owner-personal_submersibles@psubs.org
[mailto:owner-personal_submersibles@psubs.org] On Behalf Of Brian V.
Ryder Hugh I was thinking of using a
design that some of the navy ships use their fuel tanks are also ballast tank
they use a rubber bladder in the tank fuel inside and water outside could you
do the same a hydraulic pump a light oil as you pumped oil in it would force
water out and then the hydraulic pump would never see salt water, it’s just an
idea I have been kicking around Brian V. Ryder CONFIDENTIALITY NOTICE: This e-mail message, including any
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not the intended recipient, please contact the sender by reply e-mail and
destroy all copies of the original message. From:
owner-personal_submersibles@psubs.org
[mailto:owner-personal_submersibles@psubs.org] On Behalf Of Hugh Fulton I am looking for a bronze gear pump or such
for pumping water in and out of the Variable buoyancy tank. Harold Le Tourneau project page states he
is using one and I have a hydraulic pump on the Comsub which uses one but
looking for a simple corrosion proof one that is good for about 250 psi. Does anyone have any suggestions or using
one and where to source. I was hoping for about 40 litres per
minute. Any comments on capacity chosen. The problem with the
hydraulic pump is that the rotors/gears are made from steel. Hugh
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