| Author |
Message
|
| Hubb |
 Posted: 04/10/2009 8:16 AM Post subject: |
 |
|
Major General
Joined: 28 May 2007
Posts: 2410
701.43 Spud Bux
|
| Mine uses an o-ring that sits in the groove without moving. I got it just a tad smaller so that I could stretch it and sit it in the groove. I lubed it also. |
|
| Back to top |
|
 |
|
|
|
| c11man |
| Posted: 04/10/2009 8:18 AM Post subject: |
|
|
Brigadier General
Joined: 06 Feb 2009
Posts: 838
1595.00 Spud Bux
|
|
| Back to top |
|
|
| jon_89 |
| Posted: 04/10/2009 18:58 PM Post subject: |
|
|
Colonel
Joined: 11 Apr 2007
Posts: 606
826.20 Spud Bux
|
does your guys sprinkler valves have like little grooves in the inside? I was just wondering because mine does and I dont think it would allow me to do the piston mod.  |
|
| Back to top |
|
|
| c11man |
| Posted: 04/11/2009 7:21 AM Post subject: |
|
|
Brigadier General
Joined: 06 Feb 2009
Posts: 838
1595.00 Spud Bux
|
|
| Back to top |
|
|
| jon_89 |
| Posted: 04/11/2009 14:54 PM Post subject: |
|
|
Colonel
Joined: 11 Apr 2007
Posts: 606
826.20 Spud Bux
|
| its an orbit. the one with the solenoid in the middle. |
|
| Back to top |
|
|
| c11man |
| Posted: 04/11/2009 15:30 PM Post subject: |
|
|
Brigadier General
Joined: 06 Feb 2009
Posts: 838
1595.00 Spud Bux
|
oh i dont know then.
more experienced people might know |
|
| Back to top |
|
|
| Hubb |
| Posted: 04/14/2009 6:38 AM Post subject: |
|
|
Major General
Joined: 28 May 2007
Posts: 2410
701.43 Spud Bux
|
| jon_89 wrote: | | its an orbit. the one with the solenoid in the middle. |
If it's like this one, your best bet would be to get another one for the piston mod.
You see the white ring in the center of this valve body? That is used to seat the diaphragm (this being a chamber sealing version). It probably could be done, but I've not sat down and figured out just what is needed to do it yet (and, in all honesty, I probably won't).
Last edited by Hubb on 04/14/2009 9:14 AM; edited 1 time in total |
|
| Back to top |
|
|
| Technician1002 |
| Posted: 04/14/2009 7:18 AM Post subject: |
|
|
Senior Technician
Joined: 04 Apr 2009
Posts: 4670
15520.25 Spud Bux
|
[quote="hubb017"] most of us do not have a lathe to make precision cuts.
[quote]
Many of us do have a drill press. I've made pistons from 1/2 inch to 2 inches on mine out of HDPE. |
|
| Back to top |
|
|
| Hubb |
| Posted: 04/14/2009 9:16 AM Post subject: |
|
|
Major General
Joined: 28 May 2007
Posts: 2410
701.43 Spud Bux
|
| Technician1002 wrote: | | hubb017 wrote: | most of us do not have a lathe to make precision cuts.
| (fixed it for ya)
Many of us do have a drill press. I've made pistons from 1/2 inch to 2 inches on mine out of HDPE. |
True. But, still, some of us don't. Like me. I've been planning on getting one, but I have not yet.
I have, however, used wood hole saws (the kind that are used to drill door handles and larger holes in wood) successfully, and these would make fine piston makers. In fact, I tried using one the first time I made a piston for a sprinkler valve, I just didn't have one large enough.
On a side note, if anyone has an idea of how to calculate valve opening speeds, I appreciate the assistance. I'm currently putting together a series of tests for The Sprinkler Valve (do determine just how much they can be improved) and that's one of the features I'd like to include in the test. |
|
| Back to top |
|
|
| jon_89 |
| Posted: 04/14/2009 10:11 AM Post subject: |
|
|
Colonel
Joined: 11 Apr 2007
Posts: 606
826.20 Spud Bux
|
| yeah its that one. i even tried the diaghram mod and it didnt work because of that silver rod in the middle. what brand are you modding? |
|
| Back to top |
|
|
| Hubb |
| Posted: 04/14/2009 11:18 AM Post subject: |
|
|
Major General
Joined: 28 May 2007
Posts: 2410
701.43 Spud Bux
|
|
| Back to top |
|
|
| jon_89 |
| Posted: 04/14/2009 11:56 AM Post subject: |
|
|
Colonel
Joined: 11 Apr 2007
Posts: 606
826.20 Spud Bux
|
| I guess I go and try to find that one. Have you successfully completed the piston mod? |
|
| Back to top |
|
|
| Hubb |
| Posted: 04/14/2009 12:01 PM Post subject: |
|
|
Major General
Joined: 28 May 2007
Posts: 2410
701.43 Spud Bux
|
|
| Back to top |
|
|
| jon_89 |
| Posted: 04/14/2009 12:42 PM Post subject: |
|
|
Colonel
Joined: 11 Apr 2007
Posts: 606
826.20 Spud Bux
|
| Have you done any testing yet? |
|
| Back to top |
|
|
| Hubb |
| Posted: 04/14/2009 12:45 PM Post subject: |
|
|
Major General
Joined: 28 May 2007
Posts: 2410
701.43 Spud Bux
|
Actually, that's what I'm working on right now. I can tell that the shots are a little bit more powerful, but I (as well as everyone else) wants some numbers. I'm currently comparing the homemade piston and diaphragm to the standard diaphragm, pneumatically and electronically operated.
This testing should be done by next week sometime and I'll let everyone know of the results. |
|
| Back to top |
|
|
|
|
