Hello this is Joe again, just want to
introduce another new feature on one of
dredges -- This set-up is for
divers, now any of the divers watching
if there's something better that can be
done please feel free to make
suggestions and make changes. What we have here is a general setup and of course
everything can be improved upon so
please feel free to contact us or change
it as you feel free. Now we've got the
standard jetting set up here
jetter head down the end. Multi holes for
blasting up hard clays and so on.
The tornado running it about 70 psi
water pressure through here. Water
pressure is taken directly off the water
pump, this is the top of the water pump
and plumb straight into the existing
fitting. So what we've got here is two
valves that control everything. We're
trying to keep all the control to the
diver, rather than having topside have
to alter things for them. So what we've
got is a water feet on the bottom of
evidence clearly marked. This water feed
comes as I say from the water pump. You
have two lines they'll be strapped to
the suction hose which goes back to the
dredge unit. Now these two lines, so
one of them is the water feed in and
the other one it's going to be water
feed that goes back to the reversal
valve. What that does, when you close it
this way, redirects the water it goes
through back this way back to the
reversal valve. That's non hydraulic, where as
hydraulic uses water there's no oil hydraulics or topside hydraulics needed to
operate the reversal valve which is
quite handy. So everything is in control
with the diver here. The diver can in effect turn the dredge on and off
halfway if they like, by altering the
amount of water that goes into the reversal
valve. So as i say, alter that through there
end puts the reversal valve on flows
backward, back flushes the the dredge and away you go see turn it back on
continue operating as normal. You can turn
the jetter on or off entirely up to you
and that water can just be staying
building up ahead if it likes, doesn't
have to go anywhere. You just turn that
on and off to turn the reversal valve on
or off whenever suits you.
Handles here, again they can be shifted
around to whatever suits: different size,
different heights and so on
of the diver. What we've got
here, again it's just indicative, you'd be
putting a couple of floats up above you,
to put this at neutral buoyancy, again
to the divers the discretion as
to what they want to do with that.
Trying to keep it very very simple, so as I
say the two functions jetter head and
reversal valve operation completely
independent from topside. It's all
controlled with diver down here, by two very very easy to access, easy to operate
stainless steel ball valves but again as I
say everything can be improved upon so
if you've got some ideas how to change
things you're the divers, you're the
clients, please let us know and we'll be happy to make the changes for you. Now as I say this
set up is for the tornado, that makes
it be up 28 inches or 97 KPA of vacuum to
our knowledge nothing even comes close
to that much vacuum so it's a lot of
suction on this thing and a very
very powerful dredge so please let us know
if you have any questions. Thank you
