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 Maybe someone out there can help me find a 
hydraulic valve. 
I'm working on a design for a manipulating arm for 
my sub, Persistence.  The specific design I'm doing is for a K-sub, but it 
could be adapted to most any sub with a brow.   
I want to make it as powerful as possible and still 
keep it compact and easy to operate.  For a good power to size ratio and 
good control, I've decided to operate it with hydraulics.  I've located a 
nice small 12VDC power unit that puts out 1/2 gallon a minute at 600 PSI 
pressure.  I consider that perfect because 600 PSI will deliver a lot of 
punch but can be piped through plastic tubing, sparing the need 
for bulky wire and rubber hydraulic hoses.  I also found small compact 
cylinders in a range of length that are rated at 600 PSI. 
What I can't find is the directional control valve 
I need.  What I would like to use is, 12volt to 36 volt DC, 
solenoid actuated, directional control, hydraulic valves that mount on one 
common manifold.  I can fine all I want rated at 30 gallons per minute at 
2500PSI, but their big and really over kill for this 
small application.  I was thinking of trying to use pneumatic valves 
but I'd have to experiment to see how they would work with fluid and also their 
not rated for high enough pressure. 
I would like the valve operated with 
electrical solenoids rather then mechanical operated because that will allow me 
to use wires to go through the hull, rather then two fluid lines for each of the 
six cylinders I'm using. 
I'm doing the design in Auto CAD and plan to 
release it to the web, for anyone to use, once I have it 
finished.  
Can anyone help me locate the small valves?  
 
For you European guys, sorry but I don't speak 
metric very well but maybe you can convert.   
*Six valve manifold block  Five will work if 
that's all I can get 
*Six duel direction cylinder spools, with closed 
center position 
*12 - 36 VDC electrical solenoid 
actuated 
*Rated at 1/2 GPM flow minimum but not over 
5GPM. 
*Rated at, minimum 500PSI but not more then 
1000PSI  
Thanks,  Dan H. 
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