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-   -   Nelson unibody valve body (http://www.mcarterbrown.com/forums/old-gun-tech/221862-nelson-unibody-valve-body.html)

pghp8ntballer 12-24-2012 09:24 PM

Nelson unibody valve body
 
I picked up a nelson unibody (back bottle) from titus and got it all torn apart. For the project I have in mind, I would like to utilize the in-grip 12g option. What do I need to make this work? The valve body from a 007? Does it come with the pierce pin assembly, or do I have to collect a few parts for this to work?

MaD 12-24-2012 10:46 PM

The pierce pin is a separate piece. The valve will either have it on it or not. Other than that if your valve nut threads match, you should be good to go.

pghp8ntballer 12-25-2012 08:23 AM

Thanks! Ya, I took a stroll over to bacci's store, but I just wanted to make sure there was nothing else necessary. But all his valves are in poor shape. Now I must track down another one!

snaparen 12-25-2012 01:48 PM

Many of the old nelspot valve bodies are in bad condition, they are very old. They can be painted, or better yet powder coated.

MaD 12-26-2012 08:31 PM

The main problem was that the nelspot valve bodies are just paint over steel. Unless they're really pitted they're pretty easy to clean up and re-do.

pghp8ntballer 12-27-2012 06:48 AM

I am going over the entire gun, just the ones on bacci's site looking awfully beat up. Potentially heavily pitted. It's hard to say without seeing them in person.

DoC19K 12-31-2012 03:02 AM

I have an old nelson valve body that is in good shape that can support a 12gram, as the outside body isn't pittted and the threading is in good condition, minus the one fact that I man missing the round collar around where the pierce pin is as shown below.
http://i568.photobucket.com/albums/s...p/101_2827.jpg

The valve body near the top right corner of the picture doesn't have the collar and didn't have the collar when I got the marker from my uncle. I was trying to find a replacement valve but found nothing so I went bottle back.

Greenmtnphantom 12-31-2012 04:39 AM

That last post is actually the perfect segway into my post.

The earlier ones didn't have any seal around the pierce pin. I've never had a problem with them leaking but I don't believe anyone even Nelson has any more if that one breaks (which I have only heard of happening once) This will lead to one possible compatibility issue.

Since there was no seal, and no collar for a seal, the frames didn't have a hole big enough to accommodate a seal going through them. Check yours, this may require some trading out or modifying of the frame.

pghp8ntballer 12-31-2012 06:48 AM

I was curious about how the stem passed through. I gotta do a bit more eyeballing, but I think a little dremel action will be needed. Also on this point, how are the grips supposed to be open quickly to replace the 12g?

Greenmtnphantom 12-31-2012 06:59 AM

"quickly"

One side, the left I believe but it's the side with the indent on the bottom of the pannel, has a little brass or copper bushing that the grip screw goes into, it can be popped off without unscrewing. Still not great but a lot faster than unscrewing it.


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