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Thanks Guys. Brent, those are
nice drawings. It wasn’t that design I was looking for as your one has
the cylinder mounted on the side and wouldn’t work for me. The one that
I saw was with a Bimba cylinder mounted in the center and was all self
contained. Very simple etc. It might have been a Frank one but it was about
the same time you posted those. The Vent valves on the Comsub have been
removed and ½” diaphragm solenoid valves have been retro-added. I’m
not too keen on them as diaphragms have a habbit of splitting. Only two of the
four work and the MBT’s are 14” diameter cylinders with no access
to the inside. Frank, did you do some sketches of some valves way back.
They were the sort of “Frank-practical-approach” designs. Chs Hugh From:
owner-personal_submersibles@psubs.org
[mailto:owner-personal_submersibles@psubs.org] On Behalf Of Brent
Hartwig Hello Hugh, Vance, Jay, and Frank
all have designs in mind, that I'm aware of. The design restraints on the
shape of the MBT's and the heads where the highest point of the MBT's is on my
sub, required me to work up a custom assembly this last winter. This
basic configuration could also be used in larger flat topped soft ballast
tanks. The main turned parts are UHMW plastic or the like. Since you won't have
corrosion issues with it, it's easy to machine, and less expensive or heavy as
316 SS. You could even use acrylic or polycarbonate if you so wished.
I've made notes as to up grades I plan to make for my pair of Mushroom vents,
that I've not applied to the CAD models as of yet. A couple of them are to
install the hinge parts on the main assembly that is mounted to the FRP MBT
shell, and change out the SS parts that attach to the plunger and seating ring
to UHMW, including the hinge. Here was the last
plunger and seating ring sealing configuration I had worked up. And here are the
other renderings and drawings regarding my K-250's mushroom vents. Regards BH Hi All, I recall someone having a smart design for a vent
valve operated by a small Air Cylinder. Can anyone remember where the
sketch was. I think it was about a year ago. I’ve tried the
Search although admittedly not persevered too long. Chs Hugh
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