Air fitting into valve?
Printed From: Tippmann Paintball
Category: Paintball Equipment
Forum Name: Upgrades and Customizing
Forum Description: Trick it out!
URL: http://www.tippmannsports.com/forum/wwf77a/forum_posts.asp?TID=180237
Printed Date: 16 March 2026 at 6:09pm
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Topic: Air fitting into valve?
Posted By: oldpbnoob
Subject: Air fitting into valve?
Date Posted: 10 February 2009 at 10:19am
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I am wondering how far inside the valve should the threads of any air fitting protrude inside the valve on an 98? I am trying to rig a 90degree elbow into the bottom of the valve to move the air line forward and noticed that the air fitting if I crank it down, sticks into the inside of the valve and actually keeps the front part of the valve from pusing back. Does this affect the valve performance? I tried cutting one of the fittings down, but than it won't thread it because the threads get bigger as they go in and won't fit at the point I cut them.
I am essentially trying to make my own vertical adaptor that doesnt have an angled ASA attachment on it.
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Replies:
Posted By: Mack
Date Posted: 10 February 2009 at 2:14pm
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If it interferes with the movement of the valve internals it will affect performance and possibly result in damage. The best advice I can give for figuring out how far to put the fitting in is to measure the depth of the shallowest part of the threads then mark the fitting accordingly. (If you use teflon tape the white surface is quite conducive to marking.) One thing to keep in mind is that the valve on 98s is not designed for supporting weight/pressure. In the standard configuration all that is attached is the steel line and with the drop forward adapter, the body actually supports the weight of whatever is attached to the end of the drop forward. ------------- 
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Posted By: oldpbnoob
Date Posted: 10 February 2009 at 2:22pm
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I noticed it interfered with the front portion of the valve(barrel), not the back(bolt). The depth I have it in right now, the front part can open a little when you push in on it, but doesnt/can't move all the way back. I need the fitting to be as far up as possible to get it to line up so that the pipe/line fits inside the reciever.
As for support, the line will still be supported as I am routing the line through the body just like a vert adapter. Only difference is that I am milling off the front handle and making a true vertical mount versus the angled one.
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Posted By: Mack
Date Posted: 10 February 2009 at 4:50pm
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It sounds like you have the weight issue covered. Have you tested the valve with and without the fitting in place to see how much range of motion you're losing? Actually, I should make sure we're talking about the same thing: I am assuming that where the fitting goes into the valve (where the original gas line was) it is making contact with the springs and internals. Having looked at this again, I think you are okay as long as you don't touch the spring. (Doing so will interfere with valve operation and probably result in inconsistency.) Checking for lost range of motion by pushing in the valve plunger (as mentioned above) is the only way I can think of to test this. I haven't had one of these apart in a while, but the cup seal is essentially the same diameter as the spring at its widest point so if you don't contact the spring, you should be safe. -------------
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Posted By: oldpbnoob
Date Posted: 10 February 2009 at 4:55pm
| I think I have it fixed. The fitting was hitting the cup seal if you tried to push it back. I wasnt sure if this would be an issue. I ended up filing the fitting down a thread or two and that allowed enough room and still allowed the fitting to thread on. I may have to use loctite to make sure I am able to thread the fitting on as tight as I have it without anything. |
Posted By: Mack
Date Posted: 10 February 2009 at 5:02pm
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Don't use loctite; at least not the heavy duty stuff. If you ever need to remove the fitting you will regret it. I know a guy who loktited* his vertical adapter in place and had trouble getting it off when he wanted to modify something. The front of the valve body broke before the loctite loosened. *See, you can use loctite as a verb. -------------
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Posted By: oldpbnoob
Date Posted: 10 February 2009 at 7:51pm
| Will try teflon tape first, but if it is too tight, I will try the red Loctite. I'll fiddle with it until it works. i have a spare valve body or two to go through before I am in trouble. |