[PSUBS-MAILIST] Purge Valve

[Alan via Personal_Submersibles]

Hank,
I am using a 36V 750 psi pressure washer pump on my sub for trim & ballast
adjustment. It is supposed to have a corrosion proof pump, although would
need flushing out after salt water use.
I am wondering about the feasibility of using it to power manipulator hydraulics
using  water. I had heard that Nuytco had used a water hydraulics system.
Are you familiar with that at all, or have any thoughts on this?
My maximum operating depth is 500ft so I should have 500psi above my 
maximum ambient pressure.
Alan


> On 30/03/2019, at 1:38 PM, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> Alan, same as David, bleeds on both yokes
> Hank
> 
> On Friday, March 29, 2019, 1:50:14 PM MDT, Alan via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> 
> Thanks everyone,
> It might be easiest & safest in my case ( 1 person sub ) to just shut off the
> Bottles & reach inside the hull & bleed air & O2 from there.
> It saves putting another fitting in line that may leak. Also there may be the
> Possibility of leaving the purge valve open, although no doubt you would hear
> It when you turned the air on! 
> Alan
> 
>> On 30/03/2019, at 7:36 AM, Rick Patton via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>> 
>> Alan,
>> My O2 tanks are outside and I have a O2 cleaned 1st stage to knock it down to LP before coming into the sub so I bought a CGA 540 to go onto the bottle and then a bleed fitting that goes to that like I think you are looking for then a machined fitting with O ring like a scuba tank valve that my 1st stage reg attaches to. Go to "thescubadiversstore.com" and then type in the search bar 46335 and it will pull up a bleed part but the one I have does not the have threaded port for a gauge. The guy was really great to work with and good prices as well. This will get you started and when I get to me shop, I'l look up the part number that doesn't have the gauge port and get that to ya.
>> Rick
>> 
>> On Thu, Mar 28, 2019 at 6:06 PM Alan via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>> Hi,
>> Just wondering if people use / have an external valve to purge air / O2 from the 
>> system to enable the removal of the first stage yoke from the tank.
>> With a dive set up you just press the second stage purge valve.
>> Alan
>> 
>> 
>> 
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