Carefull... Sticker Shock!!! I cant believe how the price of these has climbed up... I can remember ordering these in bulk at $22.50 each.
For the 6V version? How long ago was that? The earliest version of the BC website I could find has them listed at $49 in 2007.
does it have to be 6v? i found some 12v ones with 1/4 in inlet and outlet on e-bay for like 13$ each ?
No, but they have to be able to handle 150psi. I think the 6V version is custom made, which is probably part of the reason it is so expensive. The higher voltage versions of the same or nearly the same solonoid are usually cheaper. You will have to consult the appropriate datasheet though: http://resources.norgren.com/web_pubs/publicationResults.asp?advancedsearch=KIP&searchmarket=3
Milford, it's probably best to acquire your ship first, then acquire the parts for it. If you buy a used ship, it may come with all of the parts you need. Even if you build from scratch, you'll need to know what ship you're building so you know the proper size and quantity of things to buy for it, such as props, motors, cannons, etc.
I have been in the hobby for a long time grasshopper..... I used to order Kips before Charley even thought about starting BC... Any captains still remember making tanks for the freon?
An alternative solenoid valve is the Spartan Scientific 3823 series. They come in a wide varity of voltages including 6v at a very reasonable $23 - $26 cost. I've been using them for a couple years now with no issues at all. PN 3823-07-A281 (6v).