Login    Register
User Information
Username:
Password:
We are a free and open
community, all are welcome.
Click here to Register
Sponsored
Who is online

In total there are 63 users online :: 4 registered, 1 hidden and 58 guests


Most users ever online was 155 on Mon Aug 15, 2016 1:40 am

Registered users: Bing [Bot], Google [Bot], MSNbot Media, Yahoo [Bot] based on users active over the past 5 minutes

The Team
Administrators
Global Moderators
global_moderators.png CS

Pipe Tapping

A place to ask general spud cannon related questions.
Sponsored 
  • Author
    Message

Pipe Tapping

Unread postAuthor: frogy » Wed Jun 14, 2006 8:20 am

I know there's like a million posts on this already, but I need a thorough response...

I need to tap my 1/4" MIPS x 3/8" barb fitting into my sprinkler valve... It is very easy for me to do this by drilling a 1/2" hole and threading it in....

But, when I try to thread in my 1/8" Schrader and 1/8" gauge all they do is spin out of the hole sideways and ruin my test pipe...

There's no way in hell I'm going to spend $20 on a freakin pipe tap, just the idea of someone doing that is retarded...

What is an economical way to tap pipe without freakin it up?

my 3/8" Barb wont fit into my drill chuck very well either, but I call still do that.

1/8" holes are the problem.
  • 0

-FrOgY-

I wish people would stop needing a better signature!
User avatar
frogy
Colonel
Colonel
 
Posts: 603
Joined: Mon May 29, 2006 1:24 pm
Location: Ohio
Reputation: 0

Unread postAuthor: huse_spud » Wed Jun 14, 2006 9:25 am

i put in a 1/4 hex nut in by hand to tap it then i used teflon tape. and there were no leaks and i placed it in almost perfectly straight.

another time i bought a tire valve that had a rubber seal on the end so i inserted it thru the inside of the endcap and put the other rubbber seal on the other outside and secured it with a nut.
  • 0

User avatar
huse_spud
1st Lieutenant
1st Lieutenant
 
Posts: 269
Joined: Sat Apr 15, 2006 6:52 pm
Location: Center Junction, IA
Reputation: 0

Unread postAuthor: frogy » Wed Jun 14, 2006 9:39 am

I already glued my chambers up, and I already bought a Schrader that taps in from Joel.... whenever it gets here I'll try to thread it...

My nextdoor neighbor is a plumber at my dad's house so I'm really hoping that he has a 1/8" - 27 thread pipe tap that I can use....

What size hose do I need to drill is what I really need to know.. Joel says 11/32, but that's way too small when I try, the fitting just starts turning sideways...
  • 0

-FrOgY-

I wish people would stop needing a better signature!
User avatar
frogy
Colonel
Colonel
 
Posts: 603
Joined: Mon May 29, 2006 1:24 pm
Location: Ohio
Reputation: 0

Unread postAuthor: huse_spud » Wed Jun 14, 2006 9:44 am

hose, your talking about sprinkler valves right? i think there is a tutorial in general spud cannon section i think. i wouldn't want to give you bad info becuz ive never used hose be4.
i just had a hex nut attached to a blowgun on my first sprinkler.

http://www.spudfiles.com/forums/viewtopic.php?t=305

or did u mean what size hole?

in that case take an extra piece of scrap pvc pipe, drill holes and see what works.

i have a piece of scrap cellular core that i use.
  • 0

User avatar
huse_spud
1st Lieutenant
1st Lieutenant
 
Posts: 269
Joined: Sat Apr 15, 2006 6:52 pm
Location: Center Junction, IA
Reputation: 0

Unread postAuthor: frogy » Wed Jun 14, 2006 10:10 am

I'm using a 2.5" long 1" diameter nipple that I cut wrong for my test peice.... lol it's 2.5" long and has like 15 holes in it, some 1/2", some 11/32", I'll try something bigger than the 11/32" and maybe it will work right, I'm still hoping my neighbor has pipe taps that I can use though.


Joel says drill an 11/32" hole to thread in the 1/8" NPT Pop-off valve that he sells...

I'm drilling an 11/32" hole and I can't thread in my 1/8" NPT Hose Barb into my test pipe.

The 1/8" NPT Hose barb isn't for my sprinkler, it was a part that I accidently ordered and now I'm using it to test how to thread my 1/8" NPT Schrader and 1/8" NPT 100 Psi gauge once I get them from Joel.
  • 0

-FrOgY-

I wish people would stop needing a better signature!
User avatar
frogy
Colonel
Colonel
 
Posts: 603
Joined: Mon May 29, 2006 1:24 pm
Location: Ohio
Reputation: 0

Unread postAuthor: huse_spud » Wed Jun 14, 2006 10:16 am

ok got it. good luck with that.

u can get a signature now at the store if u want.
  • 0

User avatar
huse_spud
1st Lieutenant
1st Lieutenant
 
Posts: 269
Joined: Sat Apr 15, 2006 6:52 pm
Location: Center Junction, IA
Reputation: 0

Unread postAuthor: spudshot » Wed Jun 14, 2006 10:22 am

what store are you shopping at? 1/8" npt taps are about 4 bucks here, just pick one up and do it the right way.
  • 0

Image

spudshot
Brigadier General
Brigadier General
 
Posts: 1036
Joined: Sun Oct 03, 2004 7:16 am
Reputation: 0

Sponsored

Sponsor
 


Unread postAuthor: huse_spud » Wed Jun 14, 2006 10:26 am

spudshot's right.
  • 0

User avatar
huse_spud
1st Lieutenant
1st Lieutenant
 
Posts: 269
Joined: Sat Apr 15, 2006 6:52 pm
Location: Center Junction, IA
Reputation: 0

Unread postAuthor: Shrimphead » Wed Jun 14, 2006 11:09 am

For my pressure guage, I just found a drill bit just a little smaller than the threads, drilled the hole, then twisted the guage in. Then I pulled it out, epoxied it, and turned it back in. Worked just fine for me.
  • 0

Controlled insanity = Genius
Life flies when you're being dumb.
User avatar
Shrimphead
Colonel
Colonel
 
Posts: 509
Joined: Thu Nov 17, 2005 7:42 pm
Reputation: 0

Unread postAuthor: frogy » Wed Jun 14, 2006 1:42 pm

I'm think my neighbor has pipe taps, he's a plumber so he most likely does...

If not I found that:

3/8" Drill bit works well for pre-drilling for 1/8" NPT threads

1/2" Drill bit works well for pre_drilling for 1/4" NPT threads


I thread my stuff in a vise so it's steady and it looks like I used a pipe tap... I threaded my 1/4" barb 4 times and my 1/8" barb about 7 times so I've got the hand of it and the holes look perfect now... But If my neighbor has pipe taps I'll still wait for thoose...
  • 0

-FrOgY-

I wish people would stop needing a better signature!
User avatar
frogy
Colonel
Colonel
 
Posts: 603
Joined: Mon May 29, 2006 1:24 pm
Location: Ohio
Reputation: 0

Unread postAuthor: CS » Wed Jun 14, 2006 2:02 pm

I can get both 1/4" and 1/8" taps for 2.50$ each. Shipping is like a buck... If you want me to shuttle you it, I can. Problem with threading with fitting is that they most likely "stretch" the plastic rather then cut it. Not to mention that a tap cuts the thread slightly undersized so that its a tight fit, but I guess that could always be countered by teflon.
  • 0

User avatar
CS
Donating Moderator
Donating Moderator
 
Posts: 1897
Joined: Fri Feb 18, 2005 5:32 pm
Location: Southern Utah
Country: United States (us)
Reputation: 4

Unread postAuthor: drac » Wed Jun 14, 2006 3:37 pm

You remedy the tightness by threading the tap in farther, but not so it's loose.
  • 0

User avatar
drac
Moderator
Moderator
 
Posts: 916
Joined: Sun Apr 24, 2005 8:56 am
Location: North Collins, NY
Country: United States (us)
Reputation: 2

Unread postAuthor: spudshot » Wed Jun 14, 2006 4:26 pm

you want it to be tight, it is tapered after all, plus, you should use drill bits 5/16" for 1/8" NPT and 7/16" for 1/4" npt
  • 0

Image

spudshot
Brigadier General
Brigadier General
 
Posts: 1036
Joined: Sun Oct 03, 2004 7:16 am
Reputation: 0

Unread postAuthor: frogy » Thu Jun 15, 2006 9:21 am

I found out my step-dad bought a tap and die set and it had one NPT tap and it happened to be 1/8" so I used that....

But I'm still just going to hand-thread my sprinkler valve if my neighbor doesn't have a tap, I know what I'm doing now.... or atleast I think so :D
  • 0

-FrOgY-

I wish people would stop needing a better signature!
User avatar
frogy
Colonel
Colonel
 
Posts: 603
Joined: Mon May 29, 2006 1:24 pm
Location: Ohio
Reputation: 0

Return to General Spud Cannon Related

Who is online

Registered users: Bing [Bot], Google [Bot], MSNbot Media, Yahoo [Bot]

Reputation System ©'