Hole saw for cutting hole in tank for float sensor and tank adaptor - 7/8" or 22mm





Drill and tap for the jet adaptor - drill = 8.8mm and tap = 1/8BSP




hole saw, you might be able to find at a local hardware store like Ace
drill and tap might be harder to find

I got these from www.mcmaster.com

hole saw, part # = 4008A161 - $7.24
pilot drill, part # = 4066A89 - $2.50

8.8mm drill bit, part # = 2958A136 - $6.06
1/8BSP tap, part # = 8328A21 - $15.98

 

The unibit or stepped drills also work really nice for making a clean hole. Lowes and Home Depot both have the 7/8" unibits. A little more expensive than the hole saw but a very useful thing to have around the shop, and again, in thin materials the unibits often make a cleaner hole than almost anything else.

Also, on the drill for the 1/8" BSPP tap, I've seen 11/32" listed as well as 8.8mm.... most hardware stores should have 11/32" bits even though they might not have metric drill sizes.

 

 

If you purchase a drill & tap for these hang on to them and share them with someone else if you know someone who needs them, shipping these via postal mail is only a couple of bucks . In the past I had these and sent them to a couple of people and told them to hold on to them = resend them out when you see another person needing some help.

The part to be clear on is the TAP/thread size for the jet adapters. It's BSP NOT NPT = most people do not understand the difference and use the WRONG tap and have issue's

The jet adapters are made of brass then nickel plated = do not try to have them welded into a pipe.

Charge pipes are typically thin and the threads resulting from taping into a thin pipe are few = you're only going to grab so much metal with the jet adapter and it's easy to over tighten the jet adapters and strip things. Go easy and be patient during the entire process and you will get great results.

Drilling the tank for the bulk head fitting, go slow and easy with this......it's east to heat up the plastic and distort the tank wall. Being that the tanks are plastic theres no need to apply a lot of pressure (read = heat) to cut the hole fast. One more on the holes for the float and bulk head fitting.......think and double check and think again before drilling = once drilling anything you're committed to what you've done.

Aquamist also has these for mounting jets into soft pipes
http://www.srtforums.com/forums/showthread.php?t=317960

Heres a thread that may help with the hard pipe adapters. Nothing really new in this thats not posted earlier......just additional info.
http://www.srtforums.com/forums/showthread.php?t=318464

In this thread theres an image of the float sensor.....notice the swing of the float, it's a common mistake to orientate the float incorrectly
http://www.srtforums.com/forums/showthread.php?t=318442


Last thing, throughly rinse tanks and lines with clean fresh water before using (no plastic pieces/particles from manufacturing or drilling). Same is true to do before installing jets = flush the system then install the jets. Use distilled water on first use = not nice to have methanol leaking anywhere = Be safe, no one is above making a simple mistake, although being diligent while doing the install helps to minimize or limit any errors.

 

This is a good tool for drilling thin metal or plastics


http://www.lawson-his.co.uk/scripts/...20Drill%20Bits

 

Yep, that'a unitbit. Irwin makes sells them here in the US. Very handy.

And re: Jack's earlier comment about NPT vs. BSP... they are very, very close but not that same. NPT is 27 threads per inch, BSP is 28. The crappy part about this is that it makes it hard to eyeball which is which even if you are holding the two side by side. Also, make sure you are aware that there are two types of BSP - "parallel thread" and "tapered thread": BSPP and BSPT. You want the parallel kind for the jet adaptors.

 

Good find for USA users. 7/8" = 22.2mm perfect! (NOT 3/4" as previously stated)

google shown this below:
http://www.irwin.com/irwin/consumer/...&skuid=BM10220

http://www.irwin.com/irwin/consumer/...&skuid=BM10233

 

To be clear, you would need one that goes to 7/8", not just 3/4". At home depot they had this one for about $40, but they also had a 3-piece set that incuded this one for about $55. The set is obviously the better deal.

 

You are making this too easy for us.

Do you know where I can readily get these parts:

x1 806-270 water tank adaptor
x1 806-380 6mm tee
x1 806- 375 6mm to 1/8 BSP swivelable elbow

 

2JZfan

You are absolutely correct, you need a 7/8". My big mistake. I will amend

 

pm jack

 

Yeah Binh,

Talk to Jack like Abner said. He will set you up

 

You can also just use a normal 7/8" drill bit. I did not have a step bit or hole saw around and normal bits work just fine.

 

Need to get a reduced shank bit, my drill chuck can only hold 1/2" max.

 

Binh, Do you want me to send this stuff to the address you sent in the PM? No need to wait around about the details with this, I can send this stuff prior to leaving on vacation. Just need to get in touch before Thursday night.