Major credit to everyone at spudfiles.com who helped me fix my sprinkler valve problem.
Modded Sprinkler Valve trigger
bike pump powered (easier for the most part)
Battle-Rifle type feel
No video yet >.< but I'll upload one as soon as I fix a leak in the bike valve and get the time to video it
Step 1: Materials:
a rainbird or watermaster sprinkler valve.
apparently any other kind won't work because of a guide rod inside the others.
I bought one and I had to get the other watermaster 3/4
Good amount of
a 1ft. piece of 2in. piping
(all sch 40)
2in. end cap
2in. to 1in. reducing bushing
90 degree 1in elbow (2)
1in. Tee elbow
1in. to 3/4 threaded reducing bushing
small piece of threaded 3/4 on both sides to connect the sprinkler valve to the rest of the gun
3/4in. to 1/2in. reducing bushing (for barrel)
1/2in threaded piping (18in. long)
1in. to 3/4in. reducing bushing
Tee elbow 3/4 in.
3/4in. 90 degree elbow (2)
3/4in. 45 degree elbow (2)
1/4in. barbs to connect sprinkler valve to blowgun
pressure rated hose
wrench (to tighten barb into valve and other jobs)
drill bits (assorted)
bike pump w/ gauge
scope (not necessary)
laser (not necessary)
JB weld or hot glue
epoxy putty (to plug up the solonoid hole
working area (the primer is VERY messy)
Hacksaw (any saw)
Step 2: Stock
Just cut pieces of 3/4in piping to put in between the elbows and the Tee connects it. It really depends on what you like and the size you choose.
Step 3: Chamber
Step 4: Modded 90 Degree Elbow
Make sure you shave out the inside of the elbow or the pipe will get caught.
Step 5: Main Central Body
Step 6: Add the Stock to the Main Body
just glue the stock, chamber, and connecting body together.
Step 7: Mod Your Valve
Get either a rainbird or a watermaster, apparently nothing else works because of a guide rod.
Here's the youtube video for the mod that I used:
Step 8: Mod Your Trigger Housing
Cut (see picture) the piece to hold the blowgun and cut a hole in the 45 degree elbow (3/4in.) to feed the tubing inside.
Now glue the 3/4 45 degree elbow into the modded piece, and for me I glued the 3/4 elbow directly into the 1in previously modded 1in. elbow.
again i replicated this from the 25mm sniper so that instructable will help as well
Step 9: Barrel
I had a 1/2 in. pipe about 18. in long for the barrel threaded, and i found that 3/4 sch 40 pipe would fit perfectly if dremeled inside
this took me quite a while to dremel out, i dremeled a little and tried to fit it into the pipe over and over so this may be more work than you would like.
next, just use a cutting piece of your dremel to cut about half of the top of the barrel.
Step 10: Finishing Touches
I didn't attach it mainly because i would duct tape it on (so I could take it off when i wanted to) which would make it look unrefined
Feed the tubing from the sprinkler valve into the blowgun, pressurize, and test it.
I've found that the best ammo is either nerf darts (the orange tipped whistle ones fit perfectly), AA batteries that are dead, airsoft BB's for that shotgun effect, or Paper Darts by barri_kid