Tubing plugs
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- Posts: 11
- Joined: Mon Jun 28, 2010 2:08 pm
Tubing plugs
so I was at the hardware store today at lunch to buy the final pieces for my CPH and came across these, thought I should share this with the group
I'm not sure if this is the exact brand but it should give you an idea of what I'm talking about
http://www.mocap.com/tube-plugs-round-standard.html
I found one that fits perfectly onto a 3/8" aluminum rod and also fits snugly inside 1/2" PVC
all I have to do is trim the "Cap/button" portion off and glue it onto my pump rod, this should eliminate the issues I have been having with o-rings not sealing properly
I'll let you know how it works out
I'm not sure if this is the exact brand but it should give you an idea of what I'm talking about
http://www.mocap.com/tube-plugs-round-standard.html
I found one that fits perfectly onto a 3/8" aluminum rod and also fits snugly inside 1/2" PVC
all I have to do is trim the "Cap/button" portion off and glue it onto my pump rod, this should eliminate the issues I have been having with o-rings not sealing properly
I'll let you know how it works out
- cantab
- Posts: 1492
- Joined: Fri Oct 19, 2007 1:35 pm
Re: Tubing plugs
Those caps aren't meant to seal against pressure, so I don't know how well they'll work. But not much you can do besides try it and see.
I work on Windows. My toolbox is Linux.
Arsenal:
Super Soaker: XP215, 2xXP220, Liquidator, Aquashock Secret Strike M(odded), Arctic Blast M, CPS1200, CPS2100, SC Power Pak, 3l aquapack, 1.5l aquapack
Water Warriors: Jet, Sting Ray M, Shark, Argon M, Tiger Shark, PulseMaster
Others: Waterbolt, The Blaster, Storm 500, Shield Blaster 2000, generic PR gun, generic backpack piston pumper (broken), 3l garden sprayer M, 10l water carrier:
Arsenal:
Super Soaker: XP215, 2xXP220, Liquidator, Aquashock Secret Strike M(odded), Arctic Blast M, CPS1200, CPS2100, SC Power Pak, 3l aquapack, 1.5l aquapack
Water Warriors: Jet, Sting Ray M, Shark, Argon M, Tiger Shark, PulseMaster
Others: Waterbolt, The Blaster, Storm 500, Shield Blaster 2000, generic PR gun, generic backpack piston pumper (broken), 3l garden sprayer M, 10l water carrier:
- zeda.beta
- Posts: 683
- Joined: Sun May 03, 2009 10:49 pm
Re: Tubing plugs
They'll probably blow out, as cantab said, because they don't grip the pipe.
I would get real end caps, made from copper, and then do whatever you're supposed to do to connect those properly.
I would get real end caps, made from copper, and then do whatever you're supposed to do to connect those properly.
I reject your reality and substitute my own.
Quack damn you.
Quack damn you.
- C-A_99
- Posts: 1502
- Joined: Tue Aug 01, 2006 11:09 pm
Re: Tubing plugs
I usually use a tiny cut of a 3/8" wooden dowel to stuff into the end of a 1/2" aluminum rod, then cover it with epoxy/epoxy putty. It has worked every time so far.
- cantab
- Posts: 1492
- Joined: Fri Oct 19, 2007 1:35 pm
Re: Tubing plugs
It won't blow out, because it's going on the inside end of the pump rod - so the pressure would force it against the rod. The idea I think is that the ridges will seal against the inside of the pump cylinder, like a o-ring does.zeda.beta wrote:They'll probably blow out, as cantab said, because they don't grip the pipe.
I work on Windows. My toolbox is Linux.
Arsenal:
Super Soaker: XP215, 2xXP220, Liquidator, Aquashock Secret Strike M(odded), Arctic Blast M, CPS1200, CPS2100, SC Power Pak, 3l aquapack, 1.5l aquapack
Water Warriors: Jet, Sting Ray M, Shark, Argon M, Tiger Shark, PulseMaster
Others: Waterbolt, The Blaster, Storm 500, Shield Blaster 2000, generic PR gun, generic backpack piston pumper (broken), 3l garden sprayer M, 10l water carrier:
Arsenal:
Super Soaker: XP215, 2xXP220, Liquidator, Aquashock Secret Strike M(odded), Arctic Blast M, CPS1200, CPS2100, SC Power Pak, 3l aquapack, 1.5l aquapack
Water Warriors: Jet, Sting Ray M, Shark, Argon M, Tiger Shark, PulseMaster
Others: Waterbolt, The Blaster, Storm 500, Shield Blaster 2000, generic PR gun, generic backpack piston pumper (broken), 3l garden sprayer M, 10l water carrier:
- zeda.beta
- Posts: 683
- Joined: Sun May 03, 2009 10:49 pm
Re: Tubing plugs
Oh, didn't quite get where they were going to be used. They might work, but o-rings could offer a better seal when combined with that.
I reject your reality and substitute my own.
Quack damn you.
Quack damn you.
- Silence
- Posts: 3825
- Joined: Sun Apr 09, 2006 9:01 pm
Re: Tubing plugs
Titan, those pieces, look cool, but I'd be worried about sizing. Are you sure that the rim's diameter is larger than the diameter of whatever rod it screws into? Unlike an O-ring, there may not be too much leeway because there may be too much material for it to be able to compress.
Regardless, I agree that strength shouldn't be much of a problem. Some type of plug, secured by epoxy, should do the trick.
zeda.beta, initially I thought the pieces were meant to be used for nozzles, too. Unfortunately, there's not much to hold onto when screwing and unscrewing them, which could be problematic when they're wet.
Regardless, I agree that strength shouldn't be much of a problem. Some type of plug, secured by epoxy, should do the trick.
zeda.beta, initially I thought the pieces were meant to be used for nozzles, too. Unfortunately, there's not much to hold onto when screwing and unscrewing them, which could be problematic when they're wet.
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- Posts: 11
- Joined: Mon Jun 28, 2010 2:08 pm
Re: Tubing plugs
I got to test this a bit last night
these plugs are made to be pressure fit into tubing so they are always slightly larger than the tubing they are made for, so the one I have is made for 1/2" metal tubing, I'm guessing somewhere in the 16ga wall thickness area, the "fins" are larger than 5/8" and fit quite snug inside 1/2" PVC
the plugs also do not "screw" in or out, each "fin" forms a complete circle around the center of the plug
the issue that might be a dealbreaker is that even tho it seals very well, I don't think there is any amount of lubricant in the world that this thing won't scrape off the walls of the pump tube, so it gets stuck and eventually pulls off the shaft
gorilla glue and other superglues may not be good enough, (I'm waiting for a full 24 hour cure to test again) I might have to go with a 2 part epoxy
if this doesn't work, the other end of the 3/8" rod I'm working with has my other solution, press fit nylon bushings with a 1/8" thick o-ring sandwiched between them
these plugs are made to be pressure fit into tubing so they are always slightly larger than the tubing they are made for, so the one I have is made for 1/2" metal tubing, I'm guessing somewhere in the 16ga wall thickness area, the "fins" are larger than 5/8" and fit quite snug inside 1/2" PVC
the plugs also do not "screw" in or out, each "fin" forms a complete circle around the center of the plug
the issue that might be a dealbreaker is that even tho it seals very well, I don't think there is any amount of lubricant in the world that this thing won't scrape off the walls of the pump tube, so it gets stuck and eventually pulls off the shaft
gorilla glue and other superglues may not be good enough, (I'm waiting for a full 24 hour cure to test again) I might have to go with a 2 part epoxy
if this doesn't work, the other end of the 3/8" rod I'm working with has my other solution, press fit nylon bushings with a 1/8" thick o-ring sandwiched between them
Last edited by Titan on Fri Jul 16, 2010 2:17 pm, edited 1 time in total.
- zeda.beta
- Posts: 683
- Joined: Sun May 03, 2009 10:49 pm
Re: Tubing plugs
Use 2 part epoxy, and then sand the edges of it to fit your pump with the best seal, but not too tightly.
I reject your reality and substitute my own.
Quack damn you.
Quack damn you.