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vendor for servo-activated tank valve? - vendor search

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Postby Crisp » Sun May 08, 2005 11:23 pm

Hey all, it's my first post in years, please don't shoot,
Does anyone have vendor suggestions for a well-machined servo-op ballast tank vent valve? I've got some time scheduled this summer to make improvements on the Sir Frankie Crisp, (a big to-do list, vent valves among them) though I'm having a tough time finding any among the vendor websites out there nowadays.
My idea is the typical bellcrank style with a rubber stopper that plugs the hole, but as long as it's servo-op, I suppose the design specs are flexible.
Many thanks, BB
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Postby wingtip » Mon May 09, 2005 8:04 am

small world models,

or if you want a valve that works on 12vdc i have a few i will sell... they open when 12v is applied,
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Postby Bigdave » Mon May 09, 2005 8:07 am

Try www.mikessubworks.com and I think Ships and Things also sells one. www.shipsnthings.com Dave.
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Postby Crisp » Mon May 09, 2005 2:53 pm

Hey Daves, thanks for the timely reply,
Yeah, I did check both of those websites, though couldn't locate that item on ShipsnThings, while Mikessubworks only offers the "tee" valve design, which apparently is only good for pump-ballast systems.
At this point it's probably one of those things that are so minor and ubiquitous that some sites may not bother to mention they have them available. Many of the SubCom folks are professional machinists, or could probably swing a cat and hit six or seven people close by who own milling machines. "Achoo! Whoops, I made a tank valve."
Well, I'll inquire directly to ShipsnThings, because I haven't done that yet.
Dave Townsend; your suggestion sounds interesting. My system is 12v. Everything (radio, 2 motors) will be drawing from a lead-acid cell in the bow. How's your design work? Solenoid? What's the amp draw, escape diameter, overall size? Got a picture?
My sub design has a ridiculously high freeboard, which makes for a large ballast tank relative to its size. So I'm expecting to have to install two conventional escape valves to get my diving time, shall we say, less-pathetic. If your design's pipe diameter is large enough, one will probably do and will simplify my time comma money comma life. Please let me know. I can send pics of what I plan to do.
Many thanks again to both for the replies. BB
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Postby Bigdave » Mon May 09, 2005 3:10 pm

Look under MISC. Mike has two types, internal and external.



Edited By Bigdave on 1115665886
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Postby wingtip » Mon May 09, 2005 4:03 pm

copy and paste this to your browser for the 12v valves, im not sure if it will work by directly clicking on it....

http://www.runryder.com/helicopter/gallery/2102/vent_valve.jpg

http://www.runryder.com/helicopter/gallery/2102/ballast_valve.jpg

the silver one was for air/vent only (or minimal water) and the brass one is for the ballast and is capable of allowing fluids to flow thru without losing seals.. they arent the smallest thing out there but small enough for rc applications.
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Postby Crisp » Mon May 09, 2005 10:25 pm

Hey Daves, how's it going,
Holy cow, I'm blind. Thanks Bigdave, found the listing. Don't know how I missed them before. Yeah, these are the items.
And thanks Dan Townsend, appreciate the effort taking the solenoid photos. Those are heavier than what the sub could handle I think.
Problem solved. thanks very much to all. BB
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Re: vendor for servo-activated tank valve? - vendor search

Postby Crisp » Wed Dec 22, 2010 12:00 am

Hi Daves,

Picking up on this old thread, check out how I ultimately solved the problem..

Image

Recognize it? It's a sink drain assembly from Home Depot, repurposed with a spring-loaded stopper. The passing volume is HUGE!

peace,

-Crisp
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Re: vendor for servo-activated tank valve? - vendor search

Postby Scott T » Wed Dec 22, 2010 1:31 pm

Hello Crisp,

Post a picture of "Sir Frankie Crisp" so folks can see what you are plumbing.
If it is the boat I am thinking of it has a cool steampunk look to it.

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